An integer divisible by 2 (an even number). Also used for counts that come in even amounts.
6は偶数だが、7は奇数だ。
6 is an even number, but 7 is an odd number.
参加者が偶数だと、チームを二つに分けやすい。
If the number of participants is even, it's easier to divide them into two teams.
偶数同士の和は偶数になる。
The sum of two even numbers is even.