What Does 637 Mean?

637 means "always and forever."

The number 637 is a numeric code used in text messaging to represent the phrase "Always and Forever". It is a reference to the number of letters in each word: "Always" (6), "and" (3), "Forever" (7).

637 is often used between romantic partners. For example>
  • "Goodnight, 637."

    This is a sweet way to tell someone you love them always and forever before they go to bed.

  • "Remember, 637, no matter what happens."

    This would be a reassuring message during a difficult time, reminding the recipient of the sender's enduring love.

  • "Even though we argue sometimes, 637."

    This message reminds the recipient that even though there are disagreements, the sender's love is constant and unchanging.

637 is often combined with 143 to form 143 637 - ILY AAF ("I Love You, Always and Forever").

Check out our guide to text-speak using numbers.

Image for 637

When I write 637, I mean this: meaning of 637 637 = always and forever

Video Summarizing 637

Here's a short video explaining how 637 is used with other numeronyms (e.g., 143, 247):

Summary of Key Points

"Always and Forever" is the most common definition for 637 on Snapchat, WhatsApp, Facebook, Twitter, Instagram, and TikTok.
Definition:Always and Forever (number of letters in each word)
Type:Cyber Term
Guessability:guessability level 5
5: Extremely difficult to guess
Typical Users:typical user
Adults and Teenagers


An Academic Look at 637

637 is classified as a type of numeronym, which is a number-based word. Numeronyms can be formed in various ways, such as:
  • Shortening a word by replacing a sequence of letters with the count of those letters (e.g., i18n for "internationalization" and a11y for "accessibility").
  • Combining letters and numbers (e.g, K9 for "canine" and W3 for "World Wide Web").
  • Using numbers to represent letters or words (e.g., 143 or 459 for "I love you," and 5201314 for "I will love you for a lifetime").
Some numeronyms were used long before the digital era. Many of the early numeronyms, like 143 and 637, were written on the envelopes of letters between lovers. They were often a coded message between the sender and the recipient, thought to allow secret expressions of love or passion.

Using Numbers in Texts

This video shows the different ways that numbers are used in "text speak":

Example of 637 Used in a Text


"Cyber Speak" Test

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