#define _USE_MATH_DEFINES
#include<stdio.h>
#include<string>
#include<iostream>
#include<cctype>
#include<cstdio>
#include<vector>
#include<stack>
#include<queue>
#include <algorithm>
#include<math.h>
#include<set>
#include<map>
#include<iomanip>

//#include<bits/stdc++.h>



using namespace std;

long h(long w){
	if(w%2==0)return w/2;
	for(long i=3;i*i<=w;i+=2)if(w%i==0)return w/i;
	return 1;
}


int main() {
	
	long  a;
	cin>>a;
	if(h(h(a))==1)cout<<"NO"<<endl;
	else cout<<"YES"<<endl;

	
	return 0;
}