#include "bits/stdc++.h"
using namespace std;
#define ll long long int
#define rep(i,n) for( int i = 0; i < n; i++ )
#define rrep(i,n) for( int i = n; i >= 0; i-- )
#define REP(i,s,t) for( int i = s; i <= t; i++ )
#define RREP(i,s,t) for( int i = s; i >= t; i-- )
#define dump(x)  cerr << #x << " = " << (x) << endl;
#define INF 2000000000
#define mod 1000000007
#define INF2 1000000000000000000
#define int long long 

signed main(void)
{
    cin.tie(0);
    ios::sync_with_stdio(false);
	int N; cin >> N;
	vector<int> v;
	int i = 2;
	int t = sqrt(N * 2);
	while (N > 1 && i <= t) {
		while (N % i == 0) {
			N /= i;
			v.push_back(i);
		}
		i++;
	}
	if (N != 1) v.push_back(N);
	if (v.size() > 2) {
		cout << "YES" << endl;
	}
	else {
		cout << "NO" << endl;
	}

    return 0;
}