857875 has 8 divisors (see below), whose sum is σ = 1070784. Its totient is φ = 686200.

The previous prime is 857873. The next prime is 857897. The reversal of 857875 is 578758.

857875 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 857875 - 2¹ = 857873 is a prime.

It is a Duffinian number.

857875 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (857873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3307 + ... + 3556.

It is an arithmetic number, because the mean of its divisors is an integer number (133848).

2⁸⁵⁷⁸⁷⁵ is an apocalyptic number.

857875 is a deficient number, since it is larger than the sum of its proper divisors (212909).

857875 is an equidigital number, since it uses as much as digits as its factorization.

857875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6878 (or 6868 counting only the distinct ones).

The product of its digits is 78400, while the sum is 40.

The square root of 857875 is about 926.2154177080. The cubic root of 857875 is about 95.0184636320.

The spelling of 857875 in words is "eight hundred fifty-seven thousand, eight hundred seventy-five".