90487633 has 4 divisors (see below), whose sum is σ = 95250160. Its totient is φ = 85725108.

The previous prime is 90487591. The next prime is 90487637. The reversal of 90487633 is 33678409.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90487633 - 2⁹ = 90487121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90487637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2381235 + ... + 2381272.

It is an arithmetic number, because the mean of its divisors is an integer number (23812540).

Almost surely, 2^90487633 is an apocalyptic number.

It is an amenable number.

90487633 is a deficient number, since it is larger than the sum of its proper divisors (4762527).

90487633 is a wasteful number, since it uses less digits than its factorization.

90487633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4762526.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 90487633 is about 9512.4987779237. The cubic root of 90487633 is about 448.9483805652.

The spelling of 90487633 in words is "ninety million, four hundred eighty-seven thousand, six hundred thirty-three".