import java.util.*;

public class Main {

  static long p = 0;

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    long n = sc.nextLong();
    func(n);
    String ans = "NO";
    if(p >= 3) ans = "YES";
    System.out.println(ans);
  }

  public static void func(long n) {
    for(long i = 2; (i * i) <= n; i++) {
      if((n % i) == 0) {
        func(i);
        func(n / i);
      }
    }
  }
}