90565612 has 24 divisors (see below), whose sum is σ = 161360640. Its totient is φ = 44467920.

The previous prime is 90565577. The next prime is 90565621. The reversal of 90565612 is 21656509.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a pancake number, because a pancake can be divided into 90565612 parts by 13458 straight cuts.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 98089 + ... + 99007.

It is an arithmetic number, because the mean of its divisors is an integer number (6723360).

Almost surely, 2^90565612 is an apocalyptic number.

It is an amenable number.

90565612 is a deficient number, since it is larger than the sum of its proper divisors (70795028).

90565612 is a wasteful number, since it uses less digits than its factorization.

90565612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341 (or 1339 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 90565612 is about 9516.5966605715. The cubic root of 90565612 is about 449.0773060808.

The spelling of 90565612 in words is "ninety million, five hundred sixty-five thousand, six hundred twelve".