85653631 has 16 divisors (see below), whose sum is σ = 101054464. Its totient is φ = 71064864.

The previous prime is 85653583. The next prime is 85653637. The reversal of 85653631 is 13635658.

It is not a de Polignac number, because 85653631 - 2¹⁵ = 85620863 is a prime.

It is a super-2 number, since 2×85653631² = 14673089006968322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85653637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57016 + ... + 58498.

It is an arithmetic number, because the mean of its divisors is an integer number (6315904).

Almost surely, 2^85653631 is an apocalyptic number.

85653631 is a deficient number, since it is larger than the sum of its proper divisors (15400833).

85653631 is a wasteful number, since it uses less digits than its factorization.

85653631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750.

The product of its digits is 64800, while the sum is 37.

The square root of 85653631 is about 9254.9246890507. The cubic root of 85653631 is about 440.8071118925.

The spelling of 85653631 in words is "eighty-five million, six hundred fifty-three thousand, six hundred thirty-one".