#include <iostream>
#include <vector>
using namespace std;

int main(){
  long long n;
  cin >> n;
   vector<long long> P;
  for(long long i = 2; i*i <= n; ++i){
    if(n%i) continue;
    P.emplace_back(i);
    while(n%i == 0) n /= i;
  }
  if(n != 1) P.emplace_back(n);
  cout << (P.size() <= 2 ? "Yes" : "No") << '\n';
}