856135 has 16 divisors (see below), whose sum is σ = 1196352. Its totient is φ = 576000.

The previous prime is 856133. The next prime is 856139. The reversal of 856135 is 531658.

856135 is nontrivially palindromic in base 4.

It is not a de Polignac number, because 856135 - 2¹ = 856133 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 (856133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1935 + ... + 2335.

It is an arithmetic number, because the mean of its divisors is an integer number (74772).

2⁸⁵⁶¹³⁵ is an apocalyptic number.

856135 is a deficient number, since it is larger than the sum of its proper divisors (340217).

856135 is a wasteful number, since it uses less digits than its factorization.

856135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474.

The product of its digits is 3600, while the sum is 28.

The square root of 856135 is about 925.2756346084. The cubic root of 856135 is about 94.9541791958.

The spelling of 856135 in words is "eight hundred fifty-six thousand, one hundred thirty-five".