#include <iostream>
#include <algorithm>
using namespace std;

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    long long n; cin >> n;
    long long t = 1;
    while (t * t * t < n) t++;
    if (t * t * t == n) cout << "Yes" << '\n';
    else cout << "No" << '\n';
    return 0;
}