853806 has 24 divisors (see below), whose sum is σ = 1791720. Its totient is φ = 271216.

The previous prime is 853799. The next prime is 853807. The reversal of 853806 is 608358.

853806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853807) 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, 3040 + ... + 3308.

It is an arithmetic number, because the mean of its divisors is an integer number (74655).

2⁸⁵³⁸⁰⁶ is an apocalyptic number.

853806 is an abundant number, since it is smaller than the sum of its proper divisors (937914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

853806 is a wasteful number, since it uses less digits than its factorization.

853806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 853806 is about 924.0162336236. The cubic root of 853806 is about 94.8679976466.

Subtracting from 853806 its sum of digits (30), we obtain a square (853776 = 924²).

The spelling of 853806 in words is "eight hundred fifty-three thousand, eight hundred six".