206856844 has 6 divisors (see below), whose sum is σ = 361999484. Its totient is φ = 103428420.

The previous prime is 206856841. The next prime is 206856847. The reversal of 206856844 is 448658602.

206856844 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (206856841) and next prime (206856847).

It is a self number, because there is not a number n which added to its sum of digits gives 206856844.

It is not an unprimeable number, because it can be changed into a prime (206856841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25857102 + ... + 25857109.

Almost surely, 2^206856844 is an apocalyptic number.

It is an amenable number.

206856844 is a deficient number, since it is larger than the sum of its proper divisors (155142640).

206856844 is a wasteful number, since it uses less digits than its factorization.

206856844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51714215 (or 51714213 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 43.

The square root of 206856844 is about 14382.5186945820. The cubic root of 206856844 is about 591.4117719040.

The spelling of 206856844 in words is "two hundred six million, eight hundred fifty-six thousand, eight hundred forty-four".