#include <iostream>
using namespace std;

int solve(long long n){
   int ans = 0;
   for(long long i = 2;i * i <= n;i++){
      while(!(n % i)){
         n /= i;
         ans++;
      }
   }
   if(n != 1) ans++;
   return ans;
}

int main(){
   long long n;
   cin >> n;
   cout << (solve(n) >= 3 ? "YES" : "NO") << endl;
}