source_code: import java.util.Scanner;
  
  public class A235 {
  
      public static void main(String[] args) {
          // TODO Auto-generated method stub
          Scanner sc = new Scanner(System.in);
          long n = sc.nextInt();
          if (n == 1) {
              System.out.println(1);
              return;
          } else if (n == 2) {
              System.out.println(2);
              return;
          } else if (n == 3) {
              System.out.println(6);
              return;
          }
  
          if (n % 2 == 0) {
              if(n % 3 == 0) 
                  System.out.println((n - 1) * (n - 2) * (n - 3));
              else
                  System.out.println((n - 1) * n * (n - 3));
          } else {
              System.out.println(n * (n - 1) * (n - 2));
          }
      }
  }
  