#include<iostream>
using namespace std;
int main(){
    long long N;
    cin >> N;
    for(int i=2;i*i<=N;i++){
        if(N%i == 0){
            for(int j=2;j*j<=N/i;j++){
                if(N/i%j == 0){
                    cout << "YES" << endl;
                    return 0;
                }
            }
        }
    }
    cout << "NO" << endl;
    return 0;
}