#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

bool prime(ll n){
    for(ll i = 2; i <= sqrt(n) + 1; i++){
        if(n % i == 0) return false;
    }
    return true;
}

int main(void){
    ll a;
    cin >> a;
    if(prime(a) && a % 2 == 1) cout << "NO" << endl;
    else cout << "YES" << endl;
    return 0;
}