206983 has 4 divisors (see below), whose sum is σ = 236560. Its totient is φ = 177408.

The previous prime is 206953. The next prime is 206993. The reversal of 206983 is 389602.

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

It is not a de Polignac number, because 206983 - 2⁵ = 206951 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14778 + ... + 14791.

It is an arithmetic number, because the mean of its divisors is an integer number (59140).

2²⁰⁶⁹⁸³ is an apocalyptic number.

206983 is a deficient number, since it is larger than the sum of its proper divisors (29577).

206983 is an equidigital number, since it uses as much as digits as its factorization.

206983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29576.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 206983 is about 454.9538438128. The cubic root of 206983 is about 59.1531975777.

The spelling of 206983 in words is "two hundred six thousand, nine hundred eighty-three".