206855 has 8 divisors (see below), whose sum is σ = 270864. Its totient is φ = 150400.

The previous prime is 206827. The next prime is 206879. The reversal of 206855 is 558602.

206855 is nontrivially palindromic in base 14.

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

It is not a de Polignac number, because 206855 - 2¹⁴ = 190471 is a prime.

206855 is a nontrivial repdigit in base 14.

It is a plaindrome in base 9 and base 14.

It is a nialpdrome in base 14.

It is a zygodrome in base 14.

It is a congruent number.

It is an unprimeable number.

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, 1826 + ... + 1935.

It is an arithmetic number, because the mean of its divisors is an integer number (33858).

2²⁰⁶⁸⁵⁵ is an apocalyptic number.

206855 is a deficient number, since it is larger than the sum of its proper divisors (64009).

206855 is a wasteful number, since it uses less digits than its factorization.

206855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3777.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 206855 is about 454.8131484467. The cubic root of 206855 is about 59.1410014543.

The spelling of 206855 in words is "two hundred six thousand, eight hundred fifty-five".