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