#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;




int main() {
	
	long long int a;
	cin>>a;

	int t=0;
	for(long long int i=2;i*i<=a;i++)if(a%i==0){
		cout<<"YES"<<endl;
		return 0;
	}
	cout<<"NO"<<endl;
	return 0;
}