206885 has 16 divisors (see below), whose sum is σ = 297216. Its totient is φ = 135168.

The previous prime is 206879. The next prime is 206887. The reversal of 206885 is 588602.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 206885 - 2⁶ = 206821 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a zygodrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 677 + ... + 933.

It is an arithmetic number, because the mean of its divisors is an integer number (18576).

2²⁰⁶⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

206885 is a deficient number, since it is larger than the sum of its proper divisors (90331).

206885 is a wasteful number, since it uses less digits than its factorization.

206885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 206885 is about 454.8461278279. The cubic root of 206885 is about 59.1438603720.

The spelling of 206885 in words is "two hundred six thousand, eight hundred eighty-five".