source_code: import java.lang.*;
  import java.util.*;
  import java.io.*;
  
  
  public class Challenge {
  	
  	public static void main(String[] args) throws java.lang.Exception {
  		InputStream inputStream = System.in;
  		OutputStream outputStream = System.out;
  		InputReader in = new InputReader(inputStream);
  		PrintWriter out = new PrintWriter(outputStream);
  		TaskA solver = new TaskA();
  		solver.solve(in, out);
  		out.close();
  	}
  }
  
  class TaskA {
  	
  	public void solve(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 if (n%2 > 0) {
  			out.println(1L * n * (n-1) * (n-2));
  		} else if (n%3 == 0) {
  			out.println(1L * (n-1) * (n-2) * (n-3));
  		} else {
  			out.println(1L * n * (n-1) * (n-3));
  		}
  	}
  }
  
  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());
  	}
  	
  	public long nextLong() {
  		return Long.parseLong(next());
  	}
  }
  