source_code: import java.util.*;
  
  public class LCM235A
  {
      public static void main(String[] args) 
      {
          // Set up scanner
          Scanner sc = new Scanner(System.in); 
          // System.out.println("Enter n");
          long n = sc.nextLong();
          
          if (n==1)
          {
              System.out.println(1);
              return;
          }
          if (n==2)
          {
              System.out.println(2);
              return;
          }
          if (n==3)
          {
              System.out.println(6);
              return;
          }
          if (n==4)
          {
              System.out.println(12);
              return;
          }
          
          if (n%2 ==1)   // Odd number easy
          {
              System.out.println(n*(n-1)*(n-2));
              return;
          }
          
          // Even number is a bit harder
          if (n%3 == 0)
          {
              System.out.println((n-1)*(n-2)*(n-3));
          }
          else
          {
              System.out.println(n*(n-1)*(n-3));
          }
      }
  }