source_code: import java.util.Scanner;
  
  public class Prob235A {
  	public static void main(String[] Args) {
  		Scanner scan = new Scanner(System.in);
  		int x = scan.nextInt();
  		if (x < 3) {
  			if (x == 1)
  				System.out.println(1);
  			else
  				System.out.println(2);
  		} else {
  			long answer = x;
  			if (x % 2 == 1) {
  				answer *= x - 1;
  				answer *= x - 2;
  			} else if (x % 3 != 0) {
  				answer *= x - 1;
  				answer *= x - 3;
  			} else {
  				answer = x - 1;
  				answer *= x - 2;
  				answer *= x - 3;
  			}
  			System.out.println(answer);
  		}
  	}
  }
  