885621 has 16 divisors (see below), whose sum is σ = 1317888. Its totient is φ = 524400.

The previous prime is 885611. The next prime is 885623. The reversal of 885621 is 126588.

It is not a de Polignac number, because 885621 - 2⁵ = 885589 is a prime.

885621 is a lucky number.

It is a nialpdrome in base 11.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1266 + ... + 1836.

It is an arithmetic number, because the mean of its divisors is an integer number (82368).

2⁸⁸⁵⁶²¹ is an apocalyptic number.

It is an amenable number.

885621 is a deficient number, since it is larger than the sum of its proper divisors (432267).

885621 is a wasteful number, since it uses less digits than its factorization.

885621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632.

The product of its digits is 3840, while the sum is 30.

The square root of 885621 is about 941.0743860078. The cubic root of 885621 is about 96.0319988815.

The spelling of 885621 in words is "eight hundred eighty-five thousand, six hundred twenty-one".