82590885 has 24 divisors (see below), whose sum is σ = 154170744. Its totient is φ = 40659840.

The previous prime is 82590857. The next prime is 82590901. The reversal of 82590885 is 58809528.

It can be written as a sum of positive squares in 4 ways, for example, as 6796449 + 75794436 = 2607^2 + 8706^2 .

It is not a de Polignac number, because 82590885 - 2¹⁰ = 82589861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 82590885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70006 + ... + 71175.

It is an arithmetic number, because the mean of its divisors is an integer number (6423781).

Almost surely, 2^82590885 is an apocalyptic number.

It is an amenable number.

82590885 is a deficient number, since it is larger than the sum of its proper divisors (71579859).

82590885 is a wasteful number, since it uses less digits than its factorization.

82590885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141205 (or 141202 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The square root of 82590885 is about 9087.9527397539. The cubic root of 82590885 is about 435.4891841194.

The spelling of 82590885 in words is "eighty-two million, five hundred ninety thousand, eight hundred eighty-five".