#include<iostream>
using namespace std;

long long int prime[100000000];

void eratosthenes(long long n)
{
	int i, j;

	for (i = 2; i <= n / 2; i++)
	{
		for (j = 2; i*j <= n; j++)
		{
			prime[i*j] = 1;
		}
	}
}

int main()
{
	long long n;

	cin >> n;

	eratosthenes(n);

	for (int i = 2; i < n; i++)
	{
		if (prime[i] == 1)
		{
			if (n%i == 0)
			{
				cout << "YES" << endl;
				return 0;
			}
		}
	}
	cout << "NO" << endl;
}