#include <iostream>
#include <vector>

int main() {
    using namespace std;
    long long n;
    cin >> n;
    int count = 0;
    for (int i = 2; i <= n / i; i++) {
        if (n % i == 0) { count++; }
    }
    cout << (count > 1 ? "YES\n" : "NO\n");
}