#include<iostream>
using namespace std;
typedef long long LL;
int main(){
	int cnt = 0;
	LL n; cin >> n;
	for (LL i = 2; i*i <= n; i++){
		while (n % i == 0){ cnt++; n /= i; }
	}
	if (n != 1) cnt++;
	cout << (cnt < 3 ? "NO" : "YES") << endl;
	return 0;
}