866880204 has 24 divisors (see below), whose sum is σ = 2023542528. Its totient is φ = 288842640.

The previous prime is 866880199. The next prime is 866880227. The reversal of 866880204 is 402088668.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19209 + ... + 45855.

It is an arithmetic number, because the mean of its divisors is an integer number (84314272).

Almost surely, 2^866880204 is an apocalyptic number.

It is an amenable number.

866880204 is an abundant number, since it is smaller than the sum of its proper divisors (1156662324).

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

866880204 is a wasteful number, since it uses less digits than its factorization.

866880204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29365 (or 29363 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 866880204 is about 29442.8294156659. The cubic root of 866880204 is about 953.4977996634.

The spelling of 866880204 in words is "eight hundred sixty-six million, eight hundred eighty thousand, two hundred four".