#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using ld = long double;

ll N;

int main() {
  cin >> N;
  for (ll i = 1; i * i * i <= N; i++) {
    if (i * i * i == N) {
      cout << "Yes" << endl;
      return 0;
    }
  }
  cout << "No" << endl;
  return 0;
}