866253012 has 48 divisors (see below), whose sum is σ = 2053094400. Its totient is φ = 284225760.

The previous prime is 866253007. The next prime is 866253053. The reversal of 866253012 is 210352668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358087 + ... + 360497.

It is an arithmetic number, because the mean of its divisors is an integer number (42772800).

Almost surely, 2^866253012 is an apocalyptic number.

It is an amenable number.

866253012 is an abundant number, since it is smaller than the sum of its proper divisors (1186841388).

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

866253012 is a wasteful number, since it uses less digits than its factorization.

866253012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2876 (or 2874 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 866253012 is about 29432.1764740564. The cubic root of 866253012 is about 953.2677907679.

The spelling of 866253012 in words is "eight hundred sixty-six million, two hundred fifty-three thousand, twelve".