90236564 has 12 divisors (see below), whose sum is σ = 172269888. Its totient is φ = 41016600.

The previous prime is 90236563. The next prime is 90236579. The reversal of 90236564 is 46563209.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90236563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1025372 + ... + 1025459.

It is an arithmetic number, because the mean of its divisors is an integer number (14355824).

Almost surely, 2^90236564 is an apocalyptic number.

It is an amenable number.

90236564 is a deficient number, since it is larger than the sum of its proper divisors (82033324).

90236564 is a wasteful number, since it uses less digits than its factorization.

90236564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050846 (or 2050844 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 90236564 is about 9499.2928157837. The cubic root of 90236564 is about 448.5327752231.

The spelling of 90236564 in words is "ninety million, two hundred thirty-six thousand, five hundred sixty-four".