90207633 has 16 divisors (see below), whose sum is σ = 127232640. Its totient is φ = 56732544.

The previous prime is 90207631. The next prime is 90207653. The reversal of 90207633 is 33670209.

It is a happy number.

It is not a de Polignac number, because 90207633 - 2¹ = 90207631 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90207633.

It is not an unprimeable number, because it can be changed into a prime (90207631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3918 + ... + 13991.

It is an arithmetic number, because the mean of its divisors is an integer number (7952040).

Almost surely, 2^90207633 is an apocalyptic number.

It is an amenable number.

90207633 is a deficient number, since it is larger than the sum of its proper divisors (37025007).

90207633 is a wasteful number, since it uses less digits than its factorization.

90207633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18008.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 90207633 is about 9497.7698961388. The cubic root of 90207633 is about 448.4848349788.

It can be divided in two parts, 9020 and 7633, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 90207633 in words is "ninety million, two hundred seven thousand, six hundred thirty-three".