90290564 has 24 divisors (see below), whose sum is σ = 194472768. Its totient is φ = 35719200.

The previous prime is 90290549. The next prime is 90290581. The reversal of 90290564 is 46509209.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123662 + ... + 124389.

It is an arithmetic number, because the mean of its divisors is an integer number (8103032).

Almost surely, 2^90290564 is an apocalyptic number.

It is an amenable number.

90290564 is an abundant number, since it is smaller than the sum of its proper divisors (104182204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90290564 is a wasteful number, since it uses less digits than its factorization.

90290564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248075 (or 248073 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 90290564 is about 9502.1347075276. The cubic root of 90290564 is about 448.6222287622.

The spelling of 90290564 in words is "ninety million, two hundred ninety thousand, five hundred sixty-four".