90866664 has 128 divisors (see below), whose sum is σ = 303744000. Its totient is φ = 24587712.

The previous prime is 90866653. The next prime is 90866707. The reversal of 90866664 is 46666809.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27147 + ... + 30309.

It is an arithmetic number, because the mean of its divisors is an integer number (2373000).

Almost surely, 2^90866664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90866664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151872000).

90866664 is an abundant number, since it is smaller than the sum of its proper divisors (212877336).

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

90866664 is a wasteful number, since it uses less digits than its factorization.

90866664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204 (or 3194 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 90866664 is about 9532.4007469262. The cubic root of 90866664 is about 449.5743530707.

The spelling of 90866664 in words is "ninety million, eight hundred sixty-six thousand, six hundred sixty-four".