Happy Wednesday…riddle of the day: I am an odd number. Take away a letter and I become even. What number am I?

My Rotten Redheaded Older Brother by Patricia Polacco. Tricia can’t stand her rotten redheaded older brother Richie, who can do everything better than she can. So when her grandmother tells her a wish made on a shooting star will come true, she knows exactly what to wish for – to be able to do something, anything, better than Richie. https://www.storylineonline.net/books/my-rotten-redheaded-older-brother/