#include <bits/stdc++.h>
using namespace std;

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

    long long N; cin >> N;
    vector<long long> P;
    for(long long i=2; i*i<=N; i++) while(N%i == 0) P.push_back(i),N /= i;
    
    if(N != 1) P.push_back(N);

    if(P.size() >= 3) cout << "YES\n";
    else cout << "NO\n";
}