#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
  int N;
  cin>>N;
  int now = 0;
  while(now*now*now <= 1e18 && now*now*now != N) now++;
  if(now*now*now ==N) cout<<"Yes"<<endl;
  else cout<<"No"<<endl;
}