using System;

class Program
{
    public static void Main(string[] args)
    {
        long n = long.Parse(Console.ReadLine());
        long upper = (long)Math.Min(Math.Sqrt(n) + 1, n - 1);
        int primeCount = 0;
        for (long i = 2; i <= Math.Sqrt(upper); i++)
        {
            if (n%i == 0)
            {
                primeCount++;
            }
        }
        if (primeCount >= 3)
        {
            Console.WriteLine("YES");
            return;
        }
        Console.WriteLine("NO");        
    }
}