#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < n; ++i)
typedef long long ll;
using namespace std;
const int MOD = 1e9 + 7;

int main() {
    ll N;
    cin >> N;

    ll cur = 1;
    while (cur * cur * cur < N)
        cur++;

    if (cur * cur * cur == N)
        cout << "Yes\n";
    else
        cout << "No\n";

    return 0;
}