#include <iostream>
#include <algorithm>
#include <vector>
#include <cstdio>
#include <map>
#include <string>
#include <climits>

using namespace std;

bool foo(int n) {
	int zero = 'a' ^ 'a';
	int one = 'c' ^ 'b';
	for (int i = one + one; i < INT16_MAX; i += one) {
		if (i < n && n % i == zero) {
			return false;
		}
	}
	return n != one;
}

int main() {
	int n;
	cin >> n;
	puts(foo(n) ? "YES" : "NO");
}