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

#define int long long

typedef vector<int> vi;
typedef pair<int, int> pi;
#define F first
#define S second
#define PB push_back
#define MP make_pair
#define popcount __builtin_popcountll
int const MOD = 1e9 + 7;

void swapp(int &a, int &b) {
    a = a ^ b;
    b = a ^ b;
    a = a ^ b;
}

int mul(int a, int b) {
    if (log10l(a) + log10l(b) > 18.3) return 3e18;
    return a * b;
}

#define forn(i, a, b) for (int i = a; i < b; i++)

bool comp(pair<int, int> a, pair<int, int> b) {
    if (a.first == b.first) {
        return a.second > b.second;
    }
    return a.first < b.first;
}

void solve() {
    int n;
    cin>>n;
    set<int>st;
    for(int i = 2 ;i*i<=n;i++){
        while(n%i==0){
            st.insert(i);
            n/=i;
        }
    }
    if(n > 1){
        st.insert(n);
    }
    if(st.size() <=2 ){
        cout<<"Yes\n";
    }
    else{
        cout<<"No\n";
    }
}


signed main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    int t=1;
    // cin >> t;
    forn(i,0,t){
        solve();
    }
    return 0;
}