90573631 has 8 divisors (see below), whose sum is σ = 91370880. Its totient is φ = 89779872.

The previous prime is 90573611. The next prime is 90573643. The reversal of 90573631 is 13637509.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90573631 - 2⁷ = 90573503 is a prime.

It is a super-2 number, since 2×90573631² = 16407165265048322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90573611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82321 + ... + 83413.

It is an arithmetic number, because the mean of its divisors is an integer number (11421360).

Almost surely, 2^90573631 is an apocalyptic number.

90573631 is a deficient number, since it is larger than the sum of its proper divisors (797249).

90573631 is a wasteful number, since it uses less digits than its factorization.

90573631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745.

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 90573631 is about 9517.0179678300. The cubic root of 90573631 is about 449.0905599879.

It can be divided in two parts, 90573 and 631, that added together give a square (91204 = 302²).

The spelling of 90573631 in words is "ninety million, five hundred seventy-three thousand, six hundred thirty-one".