source_code: import java.math.BigInteger;
  import java.util.Scanner;
  
  public class A235 {
  
      public static void main(String[] args) {
          Scanner scan = new Scanner(System.in);
          long n = scan.nextInt();
          BigInteger res = null;
          if (n >= 3) {
              if (n % 2 != 0) {
                  res = BigInteger.valueOf(n * (n - 1) * (n - 2));
              } else if (n % 3 == 0) {
                  res = BigInteger.valueOf((n - 1) * (n - 2) * (n - 3));
              } else {
                  res = BigInteger.valueOf(n * (n - 1) * (n - 3));
              }
          } else {
              res = BigInteger.valueOf(n);
          }
          System.out.println(res);
      }
  }
  