870216804656 has 20 divisors (see below), whose sum is σ = 1686554079672. Its totient is φ = 434977042176.

The previous prime is 870216804619. The next prime is 870216804659. The reversal of 870216804656 is 656408612078.

It is a happy number.

870216804656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 870216804598 and 870216804607.

It is not an unprimeable number, because it can be changed into a prime (870216804659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8155346 + ... + 8261361.

Almost surely, 2^870216804656 is an apocalyptic number.

It is an amenable number.

870216804656 is a deficient number, since it is larger than the sum of its proper divisors (816337275016).

870216804656 is a wasteful number, since it uses less digits than its factorization.

870216804656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16420028 (or 16420022 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 870216804656 in words is "eight hundred seventy billion, two hundred sixteen million, eight hundred four thousand, six hundred fifty-six".