206859 has 8 divisors (see below), whose sum is σ = 281232. Its totient is φ = 135200.

The previous prime is 206827. The next prime is 206879. The reversal of 206859 is 958602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206859 - 2⁵ = 206827 is a prime.

It is a super-3 number, since 3×206859³ = 26554890648893337, which contains 333 as substring.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (206819) 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 7 ways as a sum of consecutive naturals, for example, 492 + ... + 809.

It is an arithmetic number, because the mean of its divisors is an integer number (35154).

2²⁰⁶⁸⁵⁹ is an apocalyptic number.

206859 is a deficient number, since it is larger than the sum of its proper divisors (74373).

206859 is a wasteful number, since it uses less digits than its factorization.

206859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 206859 is about 454.8175458357. The cubic root of 206859 is about 59.1413826593.

The spelling of 206859 in words is "two hundred six thousand, eight hundred fifty-nine".