90008685 has 32 divisors (see below), whose sum is σ = 172327680. Its totient is φ = 44311104.

The previous prime is 90008669. The next prime is 90008701. The reversal of 90008685 is 58680009.

It is an interprime number because it is at equal distance from previous prime (90008669) and next prime (90008701).

It is not a de Polignac number, because 90008685 - 2⁴ = 90008669 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23889 + ... + 27398.

It is an arithmetic number, because the mean of its divisors is an integer number (5385240).

Almost surely, 2^90008685 is an apocalyptic number.

It is an amenable number.

90008685 is a deficient number, since it is larger than the sum of its proper divisors (82318995).

90008685 is a wasteful number, since it uses less digits than its factorization.

90008685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51314 (or 51308 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 90008685 is about 9487.2907091540. The cubic root of 90008685 is about 448.1548893773.

The spelling of 90008685 in words is "ninety million, eight thousand, six hundred eighty-five".