#include <bits/stdc++.h>
using namespace std;

int main()
{
long long i;
long long N;

	cin >> N;

	if( N % 2 == 0 )
	{
		cout << "YES" << endl;

		return 0;
	}

	for( i = 3; i * i <= N; i += 2 )
	{
		if( N % i == 0 )
		{
			cout << "YES" << endl;

			return 0;
		}
	}

	cout << "NO" << endl;

	return 0;
}