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