#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <string>
#include <cmath>
#include <algorithm>
#include <vector>
#include <queue>
#include <stack>
#include <map>
#include <set>
#include <cstring>

typedef long long ll;
using namespace std;

#define mod 1000003
#define INF 10000000
#define LLINF 2000000000000000000LL

#define SIZE 100000

int mm[2010][2010]={0};

int main(){
    ll n;
    
    cin >> n;
    
    for(ll i=2;i*i<=n;i++){
        if(n%i==0){
            puts("YES");
            return 0;
        }
    }
    
    puts("NO");
    return 0;
}