90633 has 4 divisors (see below), whose sum is σ = 120848. Its totient is φ = 60420.

The previous prime is 90631. The next prime is 90641. The reversal of 90633 is 33609.

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 not a de Polignac number, because 90633 - 2¹ = 90631 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90631) 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, 15103 + ... + 15108.

It is an arithmetic number, because the mean of its divisors is an integer number (30212).

2⁹⁰⁶³³ is an apocalyptic number.

It is an amenable number.

90633 is a deficient number, since it is larger than the sum of its proper divisors (30215).

90633 is a wasteful number, since it uses less digits than its factorization.

90633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30214.

The product of its (nonzero) digits is 486, while the sum is 21.

The square root of 90633 is about 301.0531514534. The cubic root of 90633 is about 44.9188661513.

Adding to 90633 its product of nonzero digits (486), we get a palindrome (91119).

It can be divided in two parts, 906 and 33, that added together give a palindrome (939).

The spelling of 90633 in words is "ninety thousand, six hundred thirty-three".