90632815 has 16 divisors (see below), whose sum is σ = 133858368. Its totient is φ = 57367296.

The previous prime is 90632813. The next prime is 90632821. The reversal of 90632815 is 51823609.

It is not a de Polignac number, because 90632815 - 2¹ = 90632813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90632813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99142 + ... + 100051.

It is an arithmetic number, because the mean of its divisors is an integer number (8366148).

Almost surely, 2^90632815 is an apocalyptic number.

90632815 is a deficient number, since it is larger than the sum of its proper divisors (43225553).

90632815 is a wasteful number, since it uses less digits than its factorization.

90632815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199218.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 90632815 is about 9520.1268373904. The cubic root of 90632815 is about 449.1883558854.

The spelling of 90632815 in words is "ninety million, six hundred thirty-two thousand, eight hundred fifteen".