#include <iostream>
using namespace std;
typedef long long ll;
#define REP(i, n)           for(int(i)=0;(i)<(n);++(i))

const int MAX = 10000100;

int pdecomp(ll n){
    unsigned int e = 0;
    while(n % 2 == 0){ n /= 2, e++; }
    for(unsigned int p = 3; p < MAX && p*p <= n; p += 2){
        while(n % p == 0){ n /= p, e++; }
    }
    if(n != 1) e++;
    return e;
}

int main(){
    ll N;
    cin >> N;
    cout << (pdecomp(N) > 2 ?"YES":"NO") << endl;
    return 0;
}