#include<bits/stdc++.h>
using namespace std;

int main()
{
	int a;
	cin>>a;
	bool ok = false;
	for(int i = 0; i <= a; i++)
	{
		if(i * i * i == a)
		{
			ok = true;
            break;
		}
	}
	if(ok == true)
	{
		cout<<"YES"<<endl;
	}else{
		cout<<"NO"<<endl;
	}
 	return 0;
}