#include <iostream>
#include <algorithm>
#include <string>
#define REP(a,b,c) for(int a=b; a<(int)c; a++)
using namespace std;

int main(){
  long long int N;
  cin >> N;
  int cnt = 0;
  
  for(long long int i=2; i*i<=N; i++){
	while(N%i == 0){
	  cnt++;
	  N /= i;
	}
  }
  if(N>1) cnt++;
  
  string ans = (cnt>=3) ? "YES\n" : "NO\n";
  cout <<  ans;
  return 0;
}