1640

Properties by base:

More about this number at Positiv Integers and Number Empire.

The number is not a prime.

Its 5 (3 unique) factors are:
2³ = 8
5
41

Its 16 divisors are:
1
2
4
5
8
10
20
40
41
82
164
205
328
410
820
1640
Its aliquote sum is:
2140
makeing it a abundant number.

As Unicode codepoint (since version 1.1) this number represents this character:٨ ARABIC-INDIC DIGIT EIGHT in Arabic (Source: https://ucdapi.org/unicode/latest/codepoint/dec/1640); HTML: ٨

The number appears at position 68 of the decimal digits of π surrounded by
51058209749445923078164062862089986280348253 Source: The Pi-Search Page

Computations done with Math::BigInt 1.999811 and Math::Pari 2.030523 based on PARI/GP 2.11.3 (elapsed: 808.302ms; cpu: 86.652ms)