<p>What are those rules when it comes to 0? It's not considered an even number, right? Is it an integer?</p>
<p>0 is an even integer. it doesnt have a positive or negative value though.</p>
<p>why wouldn't 0 be even? all integers are even or odd...
congruent to 0 mod 2
of course its an integer....</p>
<p>Okay, thanks! I think I was getting confused with the fact that 1 is not considered to be prime.</p>
<p>That's a legitimate question.
It purely depends on the definition.
There is a very good reason why mathematicians say 1 is NOT a prime, but with regards to what they mean by 'even' or 'odd' just depends on the definition.
But in general, the other people are right in saying that 0 is an even integer.</p>