165 (number)
165 is the natural number following 164 and preceding 166.
In mathematics
165 is:- an odd number, a composite number, and a deficient number.
- a sphenic number.
- a tetrahedral number.
- the number of prime knots with 10 crossings.
- the sum of the sums of the divisors of the first 14 positive integers.
- a self number in base 10.
- a palindromic number in binary and bases 14, 32 and 54.
- a unique period in base 2.
- the number of Wikipedias.