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

vector<ll> getprimelst(int n) {
    vector<bool> isprime(n + 1, true);
    isprime[0] = isprime[1] = false;

    for (ll i = 2; i <= n; ++i) {
        if (!isprime[i]) continue;
        for (ll j = i * 2; j <= n; j += i) {
            isprime[j] = false;
        }
    }

    vector<ll> primelst;
    for (ll i = 2; i <= n; ++i) {
        if (isprime[i]) {
            ll tmp = n;
            while (!(tmp % i) && tmp) {
                primelst.push_back(i);
                tmp /= i;
            }
        }
    }

    return primelst;
}

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

    vector<ll> primelst = getprimelst(N);
    if (primelst.size() > 2) {
        cout << "YES" << endl;
    } else {
        cout << "NO" << endl;
    }
}