using System;
using System.Collections.Generic;
using System.Linq;

namespace yukicoder
{
	public class Program
	{
		public static void Main()
		{
			var n = long.Parse(Console.ReadLine());
            var s = Prime((int)Math.Sqrt(n));
            var k = new List<long>();
            foreach(var m in s)
            {
                while (n % m == 0)
                {
                    k.Add(m);
                    n /= m;
                }
            }
            if (n > 1)
            {
                k.Add(1);
            }
            k.Add(n);
            if (k.Count() > 3)
            {
                Console.WriteLine("YES");
            }
            else
            {
                Console.WriteLine("NO");
            }
		}
        static List<int> Prime(int n)
        {
            var isPrime = new bool[n + 1];
            var k = new List<int>();
            for (int i = 2; i <= n; i++)
            {
                isPrime[i] = true;
            }

            for (int i = 2; i * i <= n; i++)
            {
                if (isPrime[i])
                {
                    for (int j = i * i; j <= n; j += i)
                    {
                        isPrime[j] = false;
                    }
                }
            }

            for (int i = 2; i <= n; i++)
            {
                if (isPrime[i])
                {
                    k.Add(i);
                }
            }
            return k;
        }
    }
}