857866968 has 96 divisors (see below), whose sum is σ = 2741007360. Its totient is φ = 237193920.

The previous prime is 857866939. The next prime is 857866991. The reversal of 857866968 is 869668758.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11830 + ... + 43077.

It is an arithmetic number, because the mean of its divisors is an integer number (28552160).

Almost surely, 2^857866968 is an apocalyptic number.

It is an amenable number.

857866968 is an abundant number, since it is smaller than the sum of its proper divisors (1883140392).

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

857866968 is a wasteful number, since it uses less digits than its factorization.

857866968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54957 (or 54950 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 63.

The square root of 857866968 is about 29289.3661249266. The cubic root of 857866968 is about 950.1816708889.

The spelling of 857866968 in words is "eight hundred fifty-seven million, eight hundred sixty-six thousand, nine hundred sixty-eight".