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

int main() {
	ll n;
	cin >> n;
	int count = 0;
	for (ll i = 2;i < n;i++) {
		if (n%i == 0) {
			n /= i;
			count++;
			if (count == 2) {
				cout << "YES" << endl;
				return 0;
			}
			i--;
		}
	}
	cout << "NO" << endl;



	return 0;
}