#include <iostream>
#include <iomanip>

typedef long long ll;

int main(void)
{
  std::cin.tie(0);
  std::ios::sync_with_stdio(false);
  std::cout << std::fixed << std::setprecision(2);
  ll n, cn;
  std::cin >> n;
  cn = n;
  ll tgt = 2;
  int isdived = 0;
  while (tgt * tgt <= cn) {
    if (n%tgt != 0) {tgt++; continue;}
    n /= tgt;
    isdived++;
    if (isdived >= 2 && n!=1) {std::cout << "YES" << std::endl; return 0;}
  }
  std::cout << "NO" << std::endl;
  return 0;
}