#include<bits/stdc++.h>
using namespace std;
int main(){
int n,a=0;
cin>>n;
for(int i=1;i<=n;i++){
    if(n%i==0&&i!=1&&i!=n){
    cout<<i;
    break;
    }
    else if(i==n)cout<<"Yes";
}
    return 0;
}
 
/**************************************************************
	Problem: 1061
	User: panjinyan
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/