#include <iostream>

using namespace std;

bool check(int n){
  int i = 2;
  int count = 0;
  while (n != 1) {
    if (n % i == 0) {
      count++;
      if (count == 3) return true;
      n /= i;
    } else {
      i++;
    }
  }
  return false;
}

int main(){
  int n;
  cin >> n;
  if (check(n)) {
    cout << "YES" << endl;
  } else {
    cout << "NO" << endl;
  }
}