885631 has 4 divisors (see below), whose sum is σ = 916200. Its totient is φ = 855064.

The previous prime is 885623. The next prime is 885679. The reversal of 885631 is 136588.

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 885631 - 2³ = 885623 is a prime.

It is a super-2 number, since 2×885631² = 1568684536322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 885593 and 885602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (885611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15241 + ... + 15298.

It is an arithmetic number, because the mean of its divisors is an integer number (229050).

2⁸⁸⁵⁶³¹ is an apocalyptic number.

885631 is a deficient number, since it is larger than the sum of its proper divisors (30569).

885631 is a wasteful number, since it uses less digits than its factorization.

885631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30568.

The product of its digits is 5760, while the sum is 31.

The square root of 885631 is about 941.0796990691. The cubic root of 885631 is about 96.0323603290.

The spelling of 885631 in words is "eight hundred eighty-five thousand, six hundred thirty-one".