857471679 has 12 divisors (see below), whose sum is σ = 1247482600. Its totient is φ = 567534384.

The previous prime is 857471677. The next prime is 857471731. The reversal of 857471679 is 976174758.

857471679 is a `hidden beast` number, since 8 + 574 + 7 + 1 + 67 + 9 = 666.

It is not a de Polignac number, because 857471679 - 2¹ = 857471677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857471677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 341464 + ... + 343965.

Almost surely, 2^857471679 is an apocalyptic number.

857471679 is a deficient number, since it is larger than the sum of its proper divisors (390010921).

857471679 is a wasteful number, since it uses less digits than its factorization.

857471679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685574 (or 685571 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 54.

The square root of 857471679 is about 29282.6173522792. The cubic root of 857471679 is about 950.0357065065.

The spelling of 857471679 in words is "eight hundred fifty-seven million, four hundred seventy-one thousand, six hundred seventy-nine".