206666112 has 64 divisors (see below), whose sum is σ = 550542960. Its totient is φ = 68689920.

The previous prime is 206666087. The next prime is 206666143. The reversal of 206666112 is 211666602.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 206666112.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 199548 + ... + 200580.

Almost surely, 2^206666112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206666112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275271480).

206666112 is an abundant number, since it is smaller than the sum of its proper divisors (343876848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206666112 is a wasteful number, since it uses less digits than its factorization.

206666112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571 (or 1559 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 206666112 is about 14375.8864770142. The cubic root of 206666112 is about 591.2299459368.

The spelling of 206666112 in words is "two hundred six million, six hundred sixty-six thousand, one hundred twelve".