#include <bits/stdc++.h>
using namespace std;

// 素因数分解 O(sqrt(n))
vector<long long> prime_factors(long long n) {
  vector<long long> ret;
  for (long long i=2;i*i<=n;i++) {
    if (n%i!=0) {
      continue;
    }
    while (n%i==0) {
      n/=i;
    }
    ret.push_back(i);
  }
  if (n!=1) {
    ret.push_back(n);
  }
  return ret;
}

int main() {
  long long n;
  cin>>n;
  auto pf=prime_factors(n);
  cout<<(pf.size()<=2?"Yes":"No")<<endl;
}