source_code: import java.util.*;
  import java.io.*;
  
  public class LCMChallenge {
      public static void main(String[] args) {
          Scanner cin = new Scanner(System.in);
          int n = cin.nextInt();
          if (n < 3) {
              System.out.println(n);
          } else if (n % 2 == 1) {
              System.out.println((long) n * (n - 1) * (n - 2));
          } else {
              if (n % 3 != 0) {
                  System.out.println((long) n * (n - 1) * (n - 3));
              } else {
                  System.out.println((long) (n - 1) * (n - 2) * (n - 3));
              }
          }
      }
  }