using System.Numerics;

public class Program
{
    public static void Main()
    {

        BigInteger num = BigInteger.Parse(Console.ReadLine() ?? string.Empty);
        //int num = int.Parse(Console.ReadLine() ?? string.Empty);
        //string[] moji = (Console.ReadLine() ?? string.Empty).Trim().Split(' ');
        //string moji = Console.ReadLine() ?? string.Empty;

        //BigInteger d = (BigInteger)Math.Pow(11, 3);

        int i = 1;
        while(i <= 1000000)
        {
            BigInteger d = (BigInteger)Math.Pow(i, 3);
            if(d == num)
            {
                Console.WriteLine("Yes");
                return;
            }
            i++;
        }
        Console.WriteLine("No");
    }
}