#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define fi first
#define se second
#define all(a) a.begin(),a.end()
int main(){
  ll n;
  cin >> n;
  bool flag=false;
  for(ll i=1; i*i*i<=n; ++i){
    flag=(i*i*i==n);
  }
  cout << (flag ? "Yes\n" : "No\n");
  return 0;
}