857859868 has 12 divisors (see below), whose sum is σ = 1501690680. Its totient is φ = 428805392.

The previous prime is 857859857. The next prime is 857859889. The reversal of 857859868 is 868958758.

857859868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 14671 + ... + 43942.

It is an arithmetic number, because the mean of its divisors is an integer number (125140890).

Almost surely, 2^857859868 is an apocalyptic number.

It is an amenable number.

857859868 is a deficient number, since it is larger than the sum of its proper divisors (643830812).

857859868 is a wasteful number, since it uses less digits than its factorization.

857859868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62276 (or 62274 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 64.

The square root of 857859868 is about 29289.2449202775. The cubic root of 857859868 is about 950.1790495390.

The spelling of 857859868 in words is "eight hundred fifty-seven million, eight hundred fifty-nine thousand, eight hundred sixty-eight".