206836 has 24 divisors (see below), whose sum is σ = 423360. Its totient is φ = 86592.

The previous prime is 206827. The next prime is 206879. The reversal of 206836 is 638602.

206836 is nontrivially palindromic in base 6.

It is a super-2 number, since 2×206836² = 85562261792, which contains 22 as substring.

It is an Ulam number.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 206836.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2280 + ... + 2368.

It is an arithmetic number, because the mean of its divisors is an integer number (17640).

2²⁰⁶⁸³⁶ is an apocalyptic number.

It is an amenable number.

206836 is an abundant number, since it is smaller than the sum of its proper divisors (216524).

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

206836 is a wasteful number, since it uses less digits than its factorization.

206836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 206836 is about 454.7922602684. The cubic root of 206836 is about 59.1391906634.

The spelling of 206836 in words is "two hundred six thousand, eight hundred thirty-six".