#include <iostream>
using namespace std;
int main(){
  long long n;cin>>n;
  int z = 0;
  for(long long i = 2; n >= i*i; i++){
    while(!(n%i)){
      n/=i;
      z++;
    }
  }
  if(n!=1)z++;
  if(3 > z)cout << "NO" << endl;
  else cout << "YES" << endl;
}