206806656884 has 12 divisors (see below), whose sum is σ = 361942938084. Its totient is φ = 103394388864.

The previous prime is 206806656883. The next prime is 206806656887. The reversal of 206806656884 is 488656608602.

206806656884 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 121641907984 + 85164748900 = 348772^2 + 291830^2 .

It is a hoax number, since the sum of its digits (59) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206806656883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2182709 + ... + 2275484.

It is an arithmetic number, because the mean of its divisors is an integer number (30161911507).

Almost surely, 2^206806656884 is an apocalyptic number.

It is an amenable number.

206806656884 is a deficient number, since it is larger than the sum of its proper divisors (155136281200).

206806656884 is a wasteful number, since it uses less digits than its factorization.

206806656884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4469794 (or 4469792 counting only the distinct ones).

The product of its (nonzero) digits is 26542080, while the sum is 59.

The spelling of 206806656884 in words is "two hundred six billion, eight hundred six million, six hundred fifty-six thousand, eight hundred eighty-four".