What is 617?

617 could refer to several things, among them:

• 617 is a three-digit number that is divisible by 31.
• In terms of area codes, 617 is the area code for Boston and a few surrounding areas in Massachusetts in the United States.
• 617 is also the year in which the Battle of Huoyi occurred in China during the Tang Dynasty.
• There are several books with "617" in the title, including "617: Going to War with Today's Dambusters" by Tim Bouquet and "617 Squadron in World War II" by Brian Milton.
• In popular culture, 617 is referenced in various ways, such as:
  • "617" is a song by Majestic Casual Records.
  • "Room 617" is a horror movie.
  • "617" is the name of a robot in the video game "Kingdom Hearts III."
  • "617" is also a code name for a character in "Call of Duty: Modern Warfare."