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

int judgeprime(long long a){
	int ans = 0;
	for (long long i = 2; i * i <= a; i++)
	{
		while (a%i == 0){
			a /= i;
			ans++;
		}
	}
	if (a != 1) ans++;
	return ans;
}

int main() {
	long long N;
	cin >> N;
	if (judgeprime(N) < 3) cout << "NO" << endl;
	else cout << "YES" << endl;
}