90461568 has 32 divisors (see below), whose sum is σ = 240289560. Its totient is φ = 30153728.

The previous prime is 90461563. The next prime is 90461639. The reversal of 90461568 is 86516409.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90461563) 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, 117405 + ... + 118172.

Almost surely, 2^90461568 is an apocalyptic number.

It is an amenable number.

90461568 is an abundant number, since it is smaller than the sum of its proper divisors (149827992).

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

90461568 is a wasteful number, since it uses less digits than its factorization.

90461568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235594 (or 235582 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 90461568 is about 9511.1286396516. The cubic root of 90461568 is about 448.9052698368.

The spelling of 90461568 in words is "ninety million, four hundred sixty-one thousand, five hundred sixty-eight".