90868086 has 24 divisors (see below), whose sum is σ = 197707224. Its totient is φ = 30162240.

The previous prime is 90868079. The next prime is 90868087. The reversal of 90868086 is 68086809.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90868087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6136 + ... + 14811.

It is an arithmetic number, because the mean of its divisors is an integer number (8237801).

Almost surely, 2^90868086 is an apocalyptic number.

90868086 is an abundant number, since it is smaller than the sum of its proper divisors (106839138).

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

90868086 is a wasteful number, since it uses less digits than its factorization.

90868086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21196 (or 21193 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 90868086 is about 9532.4753343505. The cubic root of 90868086 is about 449.5766982336.

The spelling of 90868086 in words is "ninety million, eight hundred sixty-eight thousand, eighty-six".