#include <iostream>
#include <vector>
#include <cmath>
using namespace std;
typedef long long ll;

ll f(ll x) {
    if (x % 2 == 0) return x / 2;
    for (int i = 3; i * i <= x; i += 2) if (x % i == 0) return x / i;
    return 1;
}

int main() {
    ll N;
    cin >> N;

    if (f(f(N)) > 1) {
        cout << "YES" << endl;
    } else {
        cout << "NO" << endl;
    }
}