206913 has 16 divisors (see below), whose sum is σ = 322560. Its totient is φ = 115536.

The previous prime is 206911. The next prime is 206917. The reversal of 206913 is 319602.

It is not a de Polignac number, because 206913 - 2¹ = 206911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 206913.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 206913.

It is not an unprimeable number, because it can be changed into a prime (206911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1156 + ... + 1322.

It is an arithmetic number, because the mean of its divisors is an integer number (20160).

2²⁰⁶⁹¹³ is an apocalyptic number.

It is an amenable number.

206913 is a deficient number, since it is larger than the sum of its proper divisors (115647).

206913 is a wasteful number, since it uses less digits than its factorization.

206913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 206913 is about 454.8769064263. The cubic root of 206913 is about 59.1465284459.

The spelling of 206913 in words is "two hundred six thousand, nine hundred thirteen".