3600

3600 is the integer that follows 3599 and precedes 3601. In mathematics, it factors as 2^4 × 3^2 × 5^2, and it is the square of 60. It has 45 positive divisors, and its decimal representation ends with two zeros due to the 10^2 factor.

In timekeeping, 3600 seconds equal one hour. With 60 seconds per minute and 60 minutes per hour, a day contains 24 hours and 86,400 seconds. This makes 3600 a central unit in converting between seconds and hours.

In geometry and astronomy, a circle is divided into 360 degrees. Each degree comprises 60 arcminutes, and each arcminute 60 arcseconds, so there are 3600 arcseconds per degree.

Representations of 3600 include Roman numerals, where it is written as MMMDC. In other common bases, decimal 3600 equals 0xE10 in hexadecimal and 0b111000010000 in binary.

The sum of its decimal digits is 9 (3 + 6 + 0 + 0), and 3600 is divisible by 9, giving 3600 ÷ 9 = 400. This makes 3600 a Harshad number in base 10.

As a calendar year, 3600 CE would occur in the distant future. The number is often encountered in mathematical, timekeeping, and navigational contexts due to its factorization and role in standard unit conversions.