857071085 has 16 divisors (see below), whose sum is σ = 1131169536. Its totient is φ = 619445568.

The previous prime is 857071073. The next prime is 857071087. The reversal of 857071085 is 580170758.

It is a cyclic number.

It is not a de Polignac number, because 857071085 - 2⁶ = 857071021 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 (857071087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137219 + ... + 143328.

It is an arithmetic number, because the mean of its divisors is an integer number (70698096).

Almost surely, 2^857071085 is an apocalyptic number.

It is an amenable number.

857071085 is a deficient number, since it is larger than the sum of its proper divisors (274098451).

857071085 is a wasteful number, since it uses less digits than its factorization.

857071085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280612.

The product of its (nonzero) digits is 78400, while the sum is 41.

The square root of 857071085 is about 29275.7764201054. The cubic root of 857071085 is about 949.8877374268.

The spelling of 857071085 in words is "eight hundred fifty-seven million, seventy-one thousand, eighty-five".