67 (number)
67 is the natural number following 66 and preceding 68. It is an odd and prime number.
67 is a Chen prime, an irregular prime, a lucky prime, a Heegner number, a sexy prime, and a Pillai prime. It is also rounded to the nearest whole number as a percent.
6-7 is a meme, typically popularized by Generation Alpha. It was originally from a rap song called "Doot Doot (6 7)". It is also associated with basketball player LaMelo Ball, who is in height. It is cited as part of the brainrot phenomenon, or poor-quality digital media. "6-7" is often accompanied by a hand gesture, and reportedly means nothing. Due to popularity and widespread use by young people, Dictionary.com named it the word of the year for 2025.