#include <bits/stdc++.h>
using namespace std;
int primejudge(long long int N){
    long long int k = powl(N,0.5);
    int flag = 0;
    if(N == 1){
        return 1;
    }else{
        for(long long int i=2;i<=k;i++){
            if(N % i == 0){
                flag = 1;
                break;
            }
        }
        if(flag == 1) return 0;
        else return 1;
    }
}
int judge(long long int N){
     long long int k = powl(N,0.5);
    int flag = 0;
    if(N == 1){
        return 1;
    }else{
        for(long long int i=2;i<=k;i++){
            if(N % i == 0){
                    ++flag;
                    if(N % (i*i*i) == 0) flag = 2;
                    if(flag==2)break;
            }
        }
        if(flag == 2) return 0;
        else return 1;
    }
}

int main(){
    long int N;
    cin >> N;
    if(judge(N) == 1) cout << "NO" << endl;
    else cout << "YES" << endl;
    return 0;
}