using System;
using System.Collections.Generic;
using System.Text;

class Program
{
    public void Proc()
    {
        Reader.IsDebug = false;
        long num = long.Parse(Reader.ReadLine());
        bool isYes = Yakusu(num).Count >= 2;
        

        Console.WriteLine(isYes ? "YES" : "NO");

    }

    private List<long> Yakusu(long num)
    {
        List<long> ret = new List<long>();
        for (long i = 2; i * i <= num; i++)
        {
            if (i != num && num % i == 0)
            {
                ret.Add(i);
                List<long> sub = Yakusu(num / i);
                if (sub.Count > 0)
                {
                    ret.AddRange(sub);
                    break;
                }
            }
        }
        return ret;

    }

    public class Reader
    {
        public static bool IsDebug = true;
        private static String PlainInput = @"


8




 
";
        private static System.IO.StringReader Sr = null;
        public static string ReadLine()
        {
            if (IsDebug)
            {
                if (Sr == null)
                {
                    Sr = new System.IO.StringReader(PlainInput.Trim());
                }
                return Sr.ReadLine();
            }
            else
            {
                return Console.ReadLine();
            }
        }
        public static int[] GetInt(char delimiter = ' ', bool trim = false)
        {
            string inptStr = ReadLine();
            if (trim)
            {
                inptStr = inptStr.Trim();
            }
            string[] inpt = inptStr.Split(delimiter);
            int[] ret = new int[inpt.Length];
            for (int i = 0; i < inpt.Length; i++)
            {
                ret[i] = int.Parse(inpt[i]);
            }
            return ret;
        }
    }
    static void Main()
    {
        Program prg = new Program();
        prg.Proc();
    }
}