870643876 has 12 divisors (see below), whose sum is σ = 1559060272. Its totient is φ = 425198088.

The previous prime is 870643849. The next prime is 870643889. The reversal of 870643876 is 678346078.

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, 2530770 + ... + 2531113.

Almost surely, 2^870643876 is an apocalyptic number.

870643876 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

870643876 is a deficient number, since it is larger than the sum of its proper divisors (688416396).

870643876 is a wasteful number, since it uses less digits than its factorization.

870643876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5061930 (or 5061928 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 49.

The square root of 870643876 is about 29506.6751092020. The cubic root of 870643876 is about 954.8757185931.

The spelling of 870643876 in words is "eight hundred seventy million, six hundred forty-three thousand, eight hundred seventy-six".