#include<bits/stdc++.h>
#include <atcoder/all>
#ifdef LOCAL
#include <debug_print.hpp>
#define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#define debug(...) (static_cast<void>(0))
#endif
using namespace atcoder;
using mint=modint998244353;
using namespace std;
using ll=long long;
using ul=unsigned long long;
int dx[8] = {-1, 1, 0, 0, -1, -1, 1, 1};
int dy[8] = {0, 0, -1, 1, -1, 1, -1, 1};
using Graph=vector<vector<int>>;
ll op(ll a,ll b){return max(a,b);}
ll e(){return 0;}
vector<ll> pf(ll n){
    vector<ll>t;
    ll N=n;
    for(ll i=2;i*i<=N;i++){
        while(n%i==0)t.push_back(i),n/=i;
    }
    if(n!=1)t.push_back(n);
    return t;
}
int main(){
    ll N;
    cin>>N;
    if(N==1){cout<<"NO"<<endl;return 0;}
    vector<ll>t=pf(N);
    debug(t);
    if(t.size()<3)cout<<"NO"<<endl;
    else cout<<"YES"<<endl;
}