#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)

map<long long, int> factorize(long long n) {
  map<long long, int> ret;
  
  for (long long i = 2; i * i <= n; i++) {
    while (n % i == 0) {
      ++ret[i];
      n /= i;
    }
  }
  
  if (n != 1)
    ret[n] = 1;
  
  return ret;
}

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  long long n;
  cin >> n;
  auto f = factorize(n);

  int cnt = 0;
  for (auto pr: f) 
    cnt += pr.second;

  if (cnt > 2)
    cout << "YES" << endl;
  else
    cout << "NO" << endl;
  
  return 0;
}