#include <iostream>
#include <cstdio>
#include <algorithm>
#include <vector>
#include <string>

using namespace std;
typedef long long ll;

bool is_prime(ll x) {
    for (ll i = 2; i*i <= x; i++) {
        if (x % i == 0) return false;
    }
    return x != 1;
}

bool is_ok(ll x) {
    if (x == 1) return false;
    for (ll i = 2; i*i <= x; i++) {
        if (is_prime(i)) continue;
        if (x % i == 0) return true;
    }
    return false;
}

int main(void) {
    ll x;
    cin >> x;
    cout << (is_ok(x) ? "YES" : "NO") << endl;

    return 0;
}