#include <iostream>
#include <vector>
#include <cmath>

using namespace std;

long N;

bool is_prime(long n){
  for (int i=2;i<=sqrt(n);i++) {
    if (n % i == 0) return false;
  }
  return true;
}

int main(){
  string result = "NO";
  cin>>N; 
  
  if (!is_prime(N)) {
    for (int i=2;i<=sqrt(N);i++) {
      if (N % i == 0) {
        long j = N / i;
        if (!is_prime(i) || !is_prime(j)) {
          result = "YES";
          break;
        }
      }
    }
  }
  cout<<result<<endl;
}