#include <bits/stdc++.h>

using std::cin;
using std::cout;
using ll = long long;

int main() {
    ll n;
	cin >> n;
	
	ll x = ceil(pow(n, 1.0 / 3));
	if (x * x * x == n) puts("Yes");
	else puts("No");
		
	return 0;
}