#include <iostream>
#include <algorithm>
#include <cmath>
#include <vector>
#include <complex>
#include <queue>
#include <deque>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <iomanip>
#include <assert.h>
#include <array>
#include <cstdio>
#include <cstring>
#include <random>
#include <functional>
#include <numeric>
#include <bitset>

using namespace std;

#define REP(i,a,b) for(int i=a;i<(int)b;i++)
#define rep(i,n) REP(i,0,n)
#define all(c) (c).begin(), (c).end()
#define zero(a) memset(a, 0, sizeof a)
#define minus(a) memset(a, -1, sizeof a)
template<class T1, class T2> inline bool minimize(T1 &a, T2 b) { return b < a && (a = b, 1); }
template<class T1, class T2> inline bool maximize(T1 &a, T2 b) { return a < b && (a = b, 1); }

typedef long long ll;
int const inf = 1<<29;

void ng() {cout << "NO\n";exit(0);}
void ok() {cout << "YES\n"; exit(0);}

namespace math {
namespace prime {

constexpr int Max = 1e7+1;    // !!!INPUT MAX NUMBER!!!

int prime[Max];
bool is_prime[Max];

int sieve(int n) {
  int prime_count = 0;
  rep(i, n+1) is_prime[i] = 1;
  is_prime[0] = is_prime[1] = 0;
  REP(i, 2, n+1) {
    if(!is_prime[i]) { continue; }
    prime[prime_count++] = i;
    for(long long j=(long long)i*i; j<=n; j+=i) {
      is_prime[j] = 0;
    }
  }
  return prime_count;
}

}
#define USE_PRIME_SIEVE \
  using math::prime::prime; \
  using math::prime::is_prime;  \
  using math::prime::sieve;
}

USE_PRIME_SIEVE

int main() {

  ll N; cin >> N;
  sieve(sqrt(N+1));

  set<ll> st;
  for(int i=2; (ll)i*i<=N; i++) {
    if(is_prime[i] && N % i == 0 && !is_prime[N/i]) {
      ok();
    }
  }

  ng();

  return 0;
}