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