#!/usr/bin/env perl

use strict;
use warnings;
use bigint;

my $n = <>;
if($n % 2 == 0) {
		print "YES\n";
} else {
	for(my $i = 2; $i < $n / 2; $i++) {
		if($n % $i == 0) {
			print "YES\n";
			exit;
		}
	}
}
print "NO\n";

exit;