using System;

namespace yukicoder
{
    class _036
    {
        static void Main()
        {
            long n = long.Parse(Console.ReadLine());

            int d = 0;
            while(n >= 4 && n % 2 == 0)
            {
                d++;
                if (d == 2)
                {
                    Console.WriteLine("YES");
                    return;
                }
                n /= 2;
            }

            int i = 3;
            while (Math.Pow(i, 3 - d) <= n)
            {
                if(n % i == 0)
                {
                    d++;
                    if (d == 2)
                    {
                        Console.WriteLine("YES");
                        return;
                    }
                    n /= i;
                }
                else
                {
                    i += 2;
                }
            }
            Console.WriteLine("NO");
        }
    }
}