#include <iostream>
using namespace std;

long long N;

int main() {
	cin >> N;
	for (long long i = 1; i <= 1000000; i++) {
		if (i * i * i == N) {
			cout << "Yes" << endl;
			return 0;
		}
	}
	cout << "No" << endl;
	return 0;
}