90859636 has 24 divisors (see below), whose sum is σ = 187582976. Its totient is φ = 37683360.

The previous prime is 90859631. The next prime is 90859661. The reversal of 90859636 is 63695809.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90859631) 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 7 ways as a sum of consecutive naturals, for example, 51471 + ... + 53206.

Almost surely, 2^90859636 is an apocalyptic number.

It is an amenable number.

90859636 is an abundant number, since it is smaller than the sum of its proper divisors (96723340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90859636 is a wasteful number, since it uses less digits than its factorization.

90859636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104719 (or 104717 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 90859636 is about 9532.0321023379. The cubic root of 90859636 is about 449.5627621312.

It can be divided in two parts, 9085 and 9636, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 90859636 in words is "ninety million, eight hundred fifty-nine thousand, six hundred thirty-six".