using System;

public class Hello
{
    static void Main()
    {
        var n = long.Parse(Console.ReadLine().Trim());
        getAns(n);
    }
    static void getAns(long n)
    {
        for (long i = 1; i * i * i <= n; i++)
        {
            if (i * i * i == n) { Console.WriteLine("Yes"); return; }
        }
        Console.WriteLine("No");
    }
}