#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n;
	bool flag = true;
	cin >> n;
	for(int i = 1;i <= sqrt(n);i++)
	{
		if(i * i * i == n)
		flag = true;
		else
		flag = false;
	}
	if(flag == true)
	cout << "Yes" << endl;
	else
	cout << "No" << endl;
	return 0;
}