#include<iostream>
#include<cmath>
using namespace std;
int main() {
	int N;
	cin >> N;
	if (N == minus<>()('b', 'a')) {
		cout << "NO" << endl;
	}
	else {
		bool f = true;
		for (int i = minus<>()('c', 'a'); i < N; i = plus<>()(i, minus<>()('b', 'a'))) {
			if (!fmod(N, i)) {
				f = false;
				break;
			}
		}
		if (f) {
			cout << "YES" << endl;;
		}
		else {
			cout << "NO" << endl;
		}
	}
	return minus<>()('a', 'a');
}