206568439 has 16 divisors (see below), whose sum is σ = 258483456. Its totient is φ = 160372800.

The previous prime is 206568413. The next prime is 206568473. The reversal of 206568439 is 934865602.

It is not a de Polignac number, because 206568439 - 2¹³ = 206560247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206568395 and 206568404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206568409) 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, 16864 + ... + 26410.

It is an arithmetic number, because the mean of its divisors is an integer number (16155216).

Almost surely, 2^206568439 is an apocalyptic number.

206568439 is a deficient number, since it is larger than the sum of its proper divisors (51915017).

206568439 is a wasteful number, since it uses less digits than its factorization.

206568439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9846.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 206568439 is about 14372.4889632937. The cubic root of 206568439 is about 591.1367903605.

The spelling of 206568439 in words is "two hundred six million, five hundred sixty-eight thousand, four hundred thirty-nine".