86990886 has 24 divisors (see below), whose sum is σ = 188675760. Its totient is φ = 28966896.

The previous prime is 86990881. The next prime is 86990927. The reversal of 86990886 is 68809968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86990881) 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, 21600 + ... + 25308.

It is an arithmetic number, because the mean of its divisors is an integer number (7861490).

Almost surely, 2^86990886 is an apocalyptic number.

86990886 is an abundant number, since it is smaller than the sum of its proper divisors (101684874).

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

86990886 is a wasteful number, since it uses less digits than its factorization.

86990886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5020 (or 5017 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 86990886 is about 9326.8904786108. The cubic root of 86990886 is about 443.0892886145.

The spelling of 86990886 in words is "eighty-six million, nine hundred ninety thousand, eight hundred eighty-six".