866240660224 has 72 divisors (see below), whose sum is σ = 1878816020480. Its totient is φ = 397088179200.

The previous prime is 866240660213. The next prime is 866240660261. The reversal of 866240660224 is 422066042668.

866240660224 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 2×866240660224² (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 7 ways as a sum of consecutive naturals, for example, 2721672 + ... + 3023239.

Almost surely, 2^866240660224 is an apocalyptic number.

It is an amenable number.

866240660224 is an abundant number, since it is smaller than the sum of its proper divisors (1012575360256).

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

866240660224 is a wasteful number, since it uses less digits than its factorization.

866240660224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5744977 (or 5744963 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 46.

The spelling of 866240660224 in words is "eight hundred sixty-six billion, two hundred forty million, six hundred sixty thousand, two hundred twenty-four".