871368656 has 20 divisors (see below), whose sum is σ = 1688813412. Its totient is φ = 435545856.

The previous prime is 871368637. The next prime is 871368679. The reversal of 871368656 is 656863178.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 604373056 + 266995600 = 24584^2 + 16340^2 .

It is a congruent number.

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, 59540 + ... + 72716.

Almost surely, 2^871368656 is an apocalyptic number.

It is an amenable number.

871368656 is a deficient number, since it is larger than the sum of its proper divisors (817444756).

871368656 is a wasteful number, since it uses less digits than its factorization.

871368656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17318 (or 17312 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 50.

The square root of 871368656 is about 29518.9541820167. The cubic root of 871368656 is about 955.1406117710.

The spelling of 871368656 in words is "eight hundred seventy-one million, three hundred sixty-eight thousand, six hundred fifty-six".