using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Strong_Number
{
    class Program
    {
        //calculate factorial
        static int Factorial(int digit)
        {
            int factorial = 1;
            for (int i = 1; i <= digit; i++)
                factorial *= i;
            return factorial;

        }
        static void Main(string[] args)
        {
            int number = int.Parse(Console.ReadLine());
            int sum = 0;
            int workingNumber = number;
            while (workingNumber > 0)
            {
                int digit = workingNumber % 10;
                //sum factorials below
                sum += Factorial(digit);
                workingNumber /= 10;
            }
            if (number == sum)
                Console.WriteLine("yes");
            else
                Console.WriteLine("no");
        }
    }
}