856375 has 32 divisors (see below), whose sum is σ = 1257984. Its totient is φ = 576000.

The previous prime is 856369. The next prime is 856381. The reversal of 856375 is 573658.

It is a happy number.

856375 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (856369) and next prime (856381).

It is not a de Polignac number, because 856375 - 2⁵ = 856343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 856375.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27610 + ... + 27640.

It is an arithmetic number, because the mean of its divisors is an integer number (39312).

2⁸⁵⁶³⁷⁵ is an apocalyptic number.

856375 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

856375 is a deficient number, since it is larger than the sum of its proper divisors (401609).

856375 is a wasteful number, since it uses less digits than its factorization.

856375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 66 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 856375 is about 925.4053166046. The cubic root of 856375 is about 94.9630511898.

The spelling of 856375 in words is "eight hundred fifty-six thousand, three hundred seventy-five".