#include<bits/stdc++.h>
#define INF 0x3f3f3f3f
#define LINF 0x3f3f3f3f3f3f3f3f
#define flase false
#define ture true
#define ft first
#define sd second
#define int long long
#define startt cout<<"----------start----------\n";
#define endd cout<<"-----------end-----------\n";
#define No cout<<"No\n"
#define Yes cout<<"Yes\n"
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;

const int N = 200010;
const int M = N * 2;
const int mod = 1e9 + 7;

int n, m, k;

signed main() {

	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);

	cin >> n;

	int s = 2, cnt = 0;
	while (s * s <= n) {
		int flag = 0;
		while (n % s == 0) {
			if (!flag) {
				cnt++;
				flag = 1;
				if (cnt >= 3) {
					No;
					return 0;
				}
			}
			n /= s;
		}
		s++;
	}

	if (n > 1) cnt++;
	if (cnt >= 3) {
		No;
		return 0;
	}

	Yes;

	return 0;
}