90216764 has 48 divisors (see below), whose sum is σ = 180956160. Its totient is φ = 38955840.

The previous prime is 90216761. The next prime is 90216803. The reversal of 90216764 is 46761209.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90216761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241682 + ... + 242054.

It is an arithmetic number, because the mean of its divisors is an integer number (3769920).

Almost surely, 2^90216764 is an apocalyptic number.

It is an amenable number.

90216764 is an abundant number, since it is smaller than the sum of its proper divisors (90739396).

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

90216764 is a wasteful number, since it uses less digits than its factorization.

90216764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 90216764 is about 9498.2505757639. The cubic root of 90216764 is about 448.4999666505.

The spelling of 90216764 in words is "ninety million, two hundred sixteen thousand, seven hundred sixty-four".