208855 has 4 divisors (see below), whose sum is σ = 250632. Its totient is φ = 167080.

The previous prime is 208843. The next prime is 208877. The reversal of 208855 is 558802.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 208855 - 2¹¹ = 206807 is a prime.

It is a super-2 number, since 2×208855² = 87240822050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20881 + ... + 20890.

It is an arithmetic number, because the mean of its divisors is an integer number (62658).

2²⁰⁸⁸⁵⁵ is an apocalyptic number.

208855 is a deficient number, since it is larger than the sum of its proper divisors (41777).

208855 is an equidigital number, since it uses as much as digits as its factorization.

208855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41776.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 208855 is about 457.0065645043. The cubic root of 208855 is about 59.3309941706.

The spelling of 208855 in words is "two hundred eight thousand, eight hundred fifty-five".