90689004 has 72 divisors (see below), whose sum is σ = 273522480. Its totient is φ = 25909632.

The previous prime is 90688987. The next prime is 90689017. The reversal of 90689004 is 40098609.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 90689004.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3277 + ... + 13860.

Almost surely, 2^90689004 is an apocalyptic number.

It is an amenable number.

90689004 is an abundant number, since it is smaller than the sum of its proper divisors (182833476).

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

90689004 is a wasteful number, since it uses less digits than its factorization.

90689004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17164 (or 17149 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 90689004 is about 9523.0774437678. The cubic root of 90689004 is about 449.2811634425.

The spelling of 90689004 in words is "ninety million, six hundred eighty-nine thousand, four".