#include <bits/stdc++.h>
using namespace std;
using ll=long long;
using Graph=vector<vector<int>>;
#define MOD 998244353
#define INF 1000000000

int main(){
  ll N;
  cin>>N;
  ll n=N;
  int count=0;
  ll i=2;
  while(i*i<=n){
    if(N%i==0){
      N/=i;
      count++;
    }else{
      i++;
    }
  }
  if(N>1){
    count++;
  }

  if(count>2){
    cout<<"YES"<<endl;
  }else{
    cout<<"NO"<<endl;
  }
}