#include <bits/stdc++.h>

using namespace std;

#define LL long long

int main() {
    LL n;
    cin >> n;

    if (n == 1) {
        cout << "NO" << endl;
        return 0;
    }

    int count = 0;
    while (n % 2 == 0) {
        n /= 2;
        count++;
        if (count > 2) {
            cout << "YES" << endl;
            return 0;
        }
    }

    for (int i = 3; i * i <= n; i += 2) {
        if (n % i == 0) {
            n /= i;
            count++;
            if (count == 2 && n != 1) {
                cout << "YES" << endl;
                return 0;
            }
        }
    }
    cout << "NO" << endl;
    return 0;
}