import java.util.*;

public class Exercise128{
  public static void main (String[] args){

    Scanner sc = new Scanner(System.in);

    long n = sc.nextLong();
    int count = 0;
    while(n % 2 == 0){
      n /= 2;
      count++;
    }
    for(long i = 3; i * i <= n; i += 2){
      while(n % i == 0){
        n /= i;
        count++;
      }
    }
    if(n > 1){
      count++;
    }
    if(count > 2){
      System.out.println("YES");
    }else{
      System.out.println("NO");
    }
	}
}