#include <iostream> 
using namespace std;
int main()
{
	int n;bool flag = false;
	cin>>n;
	for(int i = 1;i<=n;i++){
		if(i*i*i==n)
			flag = true;
			break;
	}
	if(flag) cout << "Yes";
	else cout << "No";
	return 0;
}