#include <bits/stdc++.h>
using namespace std;
using i64 = int64_t;
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    i64 n;
    cin >> n;
    int count = 0;
    for (i64 i = 2; i * i <= n; i += 1) {
        if (n % i == 0) {
            while (n % i == 0) {
                n /= i;
            }
            count += 1;
        }
    }
    count += n > 1;
    cout << (count <= 2 ? "Yes" : "No");
}