#include<iostream>
#include<algorithm>


using namespace std;
#define LL long long
int main(void){
	LL N;
	int cnt = 0;
	cin >> N;
	for (LL i = 2; i*i <= N; i++){
		while (N%i == 0)N /= i, cnt++;

	}
	if (N != 1)cnt++;
	if (cnt >= 3)cout << "YES" << endl;
	else cout << "NO" << endl;
	return 0;

}