#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
  #define _GLIBCXX_DEBUG
#else
  #define Debug(...) void(0)
#endif
using ll = long long;
#define rep(i, n) for (int i = 0; i < (n); ++i)

int main() {
  ll n;
  cin >> n;
  vector<pair<int, int>> pf(0);
  for (ll x = 2; x * x <= n; ++x) {
    if (n % x != 0) continue;
    int cnt = 0;
    while (n % x == 0) {
      n /= x;
      ++cnt;
    }
    pf.push_back({ x, cnt });
  }
  if (n != 1) pf.push_back({ n, 1 });
  cout << (pf.size() <= 2 ? "Yes" : "No") << endl;
  return 0;
}