#include using namespace std; using uint = unsigned int; using ll = long long; using ull = unsigned long long; template using V = vector; template using VV = V>; template using VVV = V>; template using VVVV = VV>; #define rep(i,n) for(ll i=0ll;i void chmin(T& t, const U& u) { if (t > u) t = u; } template void chmax(T& t, const U& u) { if (t < u) t = u; } // cin.tie(nullptr); // ios::sync_with_stdio(false); // cout << fixed << setprecision(20); void solve(){ ll n; cin >> n; V v(10001000, 0); v[0] = 1; v[1] = 1; rep(i,10001000) if(!v[i]){ for(ll j=2*i; j<10001000;j+=i) v[j] = 1; } v[1] = 0; v[0] = 0; string ans = "NO"; ll cnt = 0; REP(i,2,min(10001000ll, n)) if(n%i==0){ if(v[i]) ans = "YES"; cnt++; // cout << i << endl; } if(cnt>2) ans = "YES"; cout << ans << endl; } int main(){ cin.tie(nullptr); ios::sync_with_stdio(false); int t=1; // cin >> t; rep(i,t) solve(); }