#include <cstdlib>
#include <cstring>
#include <algorithm>
#include <iostream>
#include <map>
#include <vector>
#include <queue>

using namespace std;

/*
184　//名前が　184

no36
*/ 

	int p[10000001]={0,0,1,1,0,1};
int main(){
	long long n;scanf("%lld",&n);
	if(n==2){
		printf("NO\n");return 0;
	}
	for(int i=3;i*i<=n;i+=2)p[i]=1;
	for(int i=3;i*i<=n;i+=2)if(p[i])for(int j=i+i;j<=n;j+=i)p[j]=0;
	for(int i=3;i*i<=n;i+=2){
		if(n%p[i]==0&&n!=i){ 
			printf("YES\n");return 0;
		}
	}
	printf("NO\n");
	return 0;
}