206823 has 8 divisors (see below), whose sum is σ = 279936. Its totient is φ = 135800.

The previous prime is 206821. The next prime is 206827. The reversal of 206823 is 328602.

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 206823 - 2¹ = 206821 is a prime.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 206823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273 + ... + 698.

It is an arithmetic number, because the mean of its divisors is an integer number (34992).

2²⁰⁶⁸²³ is an apocalyptic number.

206823 is a deficient number, since it is larger than the sum of its proper divisors (73113).

206823 is an equidigital number, since it uses as much as digits as its factorization.

206823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 206823 is about 454.7779678041. Note that the first 3 decimals coincide. The cubic root of 206823 is about 59.1379516374.

The spelling of 206823 in words is "two hundred six thousand, eight hundred twenty-three".