is this number an even or odd number?
Even number
Number
 Similarly, the first non-negative even numbers are {0, 2, 4, 6, ...}.
what is the parity of zero? The quality of an integer being even or odd—is even. who invented the number zero? Indian mathematician Brahmagupta
wiki:25691722
Number [SEP] Even and odd numbers
An even number is an integer that is "evenly divisible" by two, that is divisible by two without remainder; an odd number is an integer that is not even. (The old-fashioned term "evenly divisible" is now almost always shortened to "divisible".) Any odd number "n" may be constructed by the formula for a suitable integer "k". Starting with the first non-negative odd numbers are {1, 3, 5, 7, ...}. Any even number "m" has the form where "k" is again an integer. Similarly, the first non-negative even numbers are {0, 2, 4, 6, ...}.