#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i,l,r) for(ll i=(l);i<(r);++i)

int main(){
	ll n; cin>>n;
	vector<ll> a;
	ll i=2;
	while(n!=1){
		if(n%i==0){a.push_back(i); n/=i;}
		else i++;
	}
	//cout<<a.size()<<endl;
	if(a.size()>2) cout<<"YES"<<endl;
	else cout<<"NO"<<endl;
}