866996806 has 8 divisors (see below), whose sum is σ = 1400533344. Its totient is φ = 400152360.

The previous prime is 866996773. The next prime is 866996807. The reversal of 866996806 is 608699668.

866996806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×866996806² = 1503366923228403272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866996807) 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, 16672990 + ... + 16673041.

It is an arithmetic number, because the mean of its divisors is an integer number (175066668).

Almost surely, 2^866996806 is an apocalyptic number.

866996806 is a deficient number, since it is larger than the sum of its proper divisors (533536538).

866996806 is a wasteful number, since it uses less digits than its factorization.

866996806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33346046.

The product of its (nonzero) digits is 6718464, while the sum is 58.

The square root of 866996806 is about 29444.8094916574. The cubic root of 866996806 is about 953.5405486559.

The spelling of 866996806 in words is "eight hundred sixty-six million, nine hundred ninety-six thousand, eight hundred six".