866882868904 has 16 divisors (see below), whose sum is σ = 1750436562420. Its totient is φ = 400099785600.

The previous prime is 866882868871. The next prime is 866882868919. The reversal of 866882868904 is 409868288668.

It can be written as a sum of positive squares in 2 ways, for example, as 679651848100 + 187231020804 = 824410^2 + 432702^2 .

It is a super-2 number, since 2×866882868904² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4167705997 + ... + 4167706204.

Almost surely, 2^866882868904 is an apocalyptic number.

It is an amenable number.

866882868904 is an abundant number, since it is smaller than the sum of its proper divisors (883553693516).

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

866882868904 is a wasteful number, since it uses less digits than its factorization.

866882868904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8335412220 (or 8335412216 counting only the distinct ones).

The product of its (nonzero) digits is 509607936, while the sum is 73.

It can be divided in two parts, 86688 and 2868904, that added together give a palindrome (2955592).

The spelling of 866882868904 in words is "eight hundred sixty-six billion, eight hundred eighty-two million, eight hundred sixty-eight thousand, nine hundred four".