90635000 has 40 divisors (see below), whose sum is σ = 212369520. Its totient is φ = 36252000.

The previous prime is 90634993. The next prime is 90635003. The reversal of 90635000 is 53609.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90635003) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 4064 + ... + 14063.

It is an arithmetic number, because the mean of its divisors is an integer number (5309238).

Almost surely, 2^90635000 is an apocalyptic number.

It is an amenable number.

90635000 is an abundant number, since it is smaller than the sum of its proper divisors (121734520).

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

90635000 is a wasteful number, since it uses less digits than its factorization.

90635000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18153 (or 18134 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 90635000 is about 9520.2415935731. The cubic root of 90635000 is about 449.1919655738.

Adding to 90635000 its reverse (53609), we get a palindrome (90688609).

The spelling of 90635000 in words is "ninety million, six hundred thirty-five thousand".