#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <climits>
#include <cfloat>
#include <map>
#include <utility>
#include <set>
#include <iostream>
#include <memory>
#include <string>
#include <vector>
#include <algorithm>
#include <functional>
#include <sstream>
#include <complex>
#include <stack>
#include <queue>
#include <iomanip>
using namespace std;
#define INF 1e9
#define PI acos(-1)
typedef long long ll;

int pfactor(ll n) {
	int ans = 0;
	for (int i = 2; i*i <= n; i++) {
		while (n%i == 0) {
			n /= i; ans++;
		}
	}
	if (n != 1)ans++;//nが素数である時の処理
	return ans;
}

int main() {
	ll n;
	cin >> n;
	cout << ((pfactor(n)>=3) ? "YES" : "NO") << endl;
	return 0;
}