#include <bits/stdc++.h>
#define int long long
using namespace std;

#define fastnuces            \
    ios::sync_with_stdio(0); \
    cin.tie(0);              \
    cout.tie(0);             \
    int t = 1;

void solve()
{
    int x;
    cin >> x;
    set<int> freq;
    for (int i = 2; i * i <= x; i++)
    {
        while (x % i == 0)
        {
            freq.insert(i);
            x /= i;
        }
    }
    if (x > 1)
        freq.insert(x);
    // for (auto &value : freq)
    //     cout << value << ", ";
    if (freq.size() > 2)
        cout << "No";
    else
        cout << "Yes";
}

signed main()
{
    fastnuces;
    // cin >> t;
    while (t--)
    {
        solve();
    }
    return 0;
}