866808012 has 24 divisors (see below), whose sum is σ = 2311488256. Its totient is φ = 247659408.

The previous prime is 866807983. The next prime is 866808017. The reversal of 866808012 is 210808668.

866808012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×866808012² = 1502712259334784288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (866808017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5159488 + ... + 5159655.

Almost surely, 2^866808012 is an apocalyptic number.

It is an amenable number.

866808012 is an abundant number, since it is smaller than the sum of its proper divisors (1444680244).

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

866808012 is a wasteful number, since it uses less digits than its factorization.

866808012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10319157 (or 10319155 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 866808012 is about 29441.6034210095. The cubic root of 866808012 is about 953.4713304836.

The spelling of 866808012 in words is "eight hundred sixty-six million, eight hundred eight thousand, twelve".