Is zero an even number

For all practical uses of the term, zero is an even number. Only in some higher mathematics is the parity unclear.

Why Zero is Even

• Division : By definition, an even number is divisible by 2, with no remainder. 0/2 = 0 with no remainder.
• Number Line : on the integer number line, even and odd numbers alternate, and any odd number increased or reduced by 1 is an even number.
• Addition : additive rules state that even + even = even, and odd + odd = even. Under these rules, zero can be even, but cannot be odd.

* Do not confuse this with the fact that zero is neither positive nor negative. That has nothing to do with whether zero is odd or even. The fact that it is not positive or negative does not mean that zero is devoid of all other mathematical properties, such as evenness (parity).