#include <iostream>
using namespace std;
typedef long long int ll;
int main(){
	ll n;	cin>>n;
	ll cnt=0;
	for(ll i=2;i*i<=n;i++){
		while(n%i==0){
			n/=i;
			cnt++;
			if(cnt>2)	goto end;
		}
	}
	end:;
	if(n>=2)	cnt++;
	if(cnt>=3)	cout<<"YES"<<endl;
	else 		cout<<"NO"<<endl;
	return 0;
}