8585800866 has 12 divisors (see below), whose sum is σ = 18602568582. Its totient is φ = 2861933616.

The previous prime is 8585800859. The next prime is 8585800913. The reversal of 8585800866 is 6680085858.

8585800866 is a `hidden beast` number, since 8 + 58 + 580 + 0 + 8 + 6 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6010745841 + 2575055025 = 77529^2 + 50745^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 238494451 + ... + 238494486.

Almost surely, 2^8585800866 is an apocalyptic number.

8585800866 is an abundant number, since it is smaller than the sum of its proper divisors (10016767716).

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

8585800866 is a wasteful number, since it uses less digits than its factorization.

8585800866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476988945 (or 476988942 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 54.

The square root of 8585800866 is about 92659.5967291030. The cubic root of 8585800866 is about 2047.6714282618.

The spelling of 8585800866 in words is "eight billion, five hundred eighty-five million, eight hundred thousand, eight hundred sixty-six".