Owlet puzzle #100
Released Tuesday, October 13, 2026 UTC
3600
the answer for puzzle #100
The five clues
- A four-digit round number (ending in 00) that is a perfect square.
- A four-digit multiple of 900.
- A four-digit number with 45 divisors — highly composite in structure.
- Equal to 60².
- The number of seconds in one hour.
Backstory
3600 = 60² is the seconds in an hour and the arc-seconds in a degree — both inherited from Babylonian sexagesimal reckoning. It's also the number of divisors used in Highly Composite Number arguments: 3600 = 2⁴·3²·5² has 45 divisors.
▶ Play puzzle #100 in practice mode
Or try today's fresh puzzle · Browse the full archive