#include <iostream>

using namespace std;

#define REP(i,fast,last) for(int i=fast;i<last;i++)

long N;

int main(){
  string result = "NO";
  cin >> N;
  if (N != 1) {
    REP(i,2,N/2+1){
      if (N%i == 0) result = "YES";
    }
  }
  cout<<result<<endl;
}