90910875 has 32 divisors (see below), whose sum is σ = 165035520. Its totient is φ = 44076000.

The previous prime is 90910867. The next prime is 90910889. The reversal of 90910875 is 57801909.

It is a happy number.

It is not a de Polignac number, because 90910875 - 2³ = 90910867 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6895 + ... + 15144.

It is an arithmetic number, because the mean of its divisors is an integer number (5157360).

Almost surely, 2^90910875 is an apocalyptic number.

90910875 is a deficient number, since it is larger than the sum of its proper divisors (74124645).

90910875 is a wasteful number, since it uses less digits than its factorization.

90910875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22068 (or 22058 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 90910875 is about 9534.7194505135. The cubic root of 90910875 is about 449.6472544266.

The spelling of 90910875 in words is "ninety million, nine hundred ten thousand, eight hundred seventy-five".