885643 has 4 divisors (see below), whose sum is σ = 966168. Its totient is φ = 805120.

The previous prime is 885623. The next prime is 885679. The reversal of 885643 is 346588.

885643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 885643 - 2⁵ = 885611 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 885599 and 885608.

It is not an unprimeable number, because it can be changed into a prime (885623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40246 + ... + 40267.

It is an arithmetic number, because the mean of its divisors is an integer number (241542).

2⁸⁸⁵⁶⁴³ is an apocalyptic number.

885643 is a deficient number, since it is larger than the sum of its proper divisors (80525).

885643 is a wasteful number, since it uses less digits than its factorization.

885643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80524.

The product of its digits is 23040, while the sum is 34.

The square root of 885643 is about 941.0860747031. The cubic root of 885643 is about 96.0327940623.

The spelling of 885643 in words is "eight hundred eighty-five thousand, six hundred forty-three".