source_code: import java.io.OutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.PrintWriter;
  import java.util.StringTokenizer;
  import java.io.IOException;
  import java.io.BufferedReader;
  import java.io.InputStreamReader;
  import java.io.InputStream;
  
  /**
   * Built using CHelper plug-in
   * Actual solution is at the top
   *
   * @author Nasko
   */
  public class Main {
      public static void main(String[] args) {
          InputStream inputStream = System.in;
          OutputStream outputStream = System.out;
          InputReader in = new InputReader(inputStream);
          PrintWriter out = new PrintWriter(outputStream);
          TaskA solver = new TaskA();
          solver.solve(1, in, out);
          out.close();
      }
  
      static class TaskA {
          public void solve(int testNumber, InputReader in, PrintWriter out) {
  
              int N = in.nextInt();
  
  
              if (N == 1) {
                  out.println(1);
              } else if (N == 2) {
                  out.println(2);
              } else if (N == 3) {
                  out.println(6);
              } else {
  
                  long best = Long.MIN_VALUE;
                  best = Math.max(best, lcm(N, lcm(N - 1, N - 2)));
                  best = Math.max(best, lcm(N, lcm(N - 2, N - 3)));
                  best = Math.max(best, lcm(N, lcm(N - 1, N - 3)));
                  best = Math.max(best, lcm(N - 1, lcm(N - 2, N - 3)));
  
                  out.println(best);
              }
          }
  
          private long lcm(long a, long b) {
              return a * (b / gcd(a, b));
          }
  
          private long gcd(long a, long b) {
              return b == 0 ? a : gcd(b, a % b);
          }
  
      }
  
      static class InputReader {
          public BufferedReader reader;
          public StringTokenizer tokenizer;
  
          public InputReader(InputStream stream) {
              reader = new BufferedReader(new InputStreamReader(stream), 32768);
              tokenizer = null;
          }
  
          public String next() {
              while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                  try {
                      tokenizer = new StringTokenizer(reader.readLine());
                  } catch (IOException e) {
                      throw new RuntimeException(e);
                  }
              }
              return tokenizer.nextToken();
          }
  
          public int nextInt() {
              return Integer.parseInt(next());
          }
  
      }
  }
  
  