208863 has 12 divisors (see below), whose sum is σ = 315120. Its totient is φ = 133056.

The previous prime is 208843. The next prime is 208877. The reversal of 208863 is 368802.

It is not a de Polignac number, because 208863 - 2⁶ = 208799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 298 + ... + 711.

It is an arithmetic number, because the mean of its divisors is an integer number (26260).

2²⁰⁸⁸⁶³ is an apocalyptic number.

208863 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

208863 is a deficient number, since it is larger than the sum of its proper divisors (106257).

208863 is a wasteful number, since it uses less digits than its factorization.

208863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038 (or 1035 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 208863 is about 457.0153170300. The cubic root of 208863 is about 59.3317517007.

The spelling of 208863 in words is "two hundred eight thousand, eight hundred sixty-three".