206164566 has 12 divisors (see below), whose sum is σ = 446689932. Its totient is φ = 68721516.

The previous prime is 206164547. The next prime is 206164583. The reversal of 206164566 is 665461602.

It is a happy number.

206164566 is a `hidden beast` number, since 2 + 0 + 6 + 1 + 645 + 6 + 6 = 666.

206164566 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 206164566.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5726776 + ... + 5726811.

It is an arithmetic number, because the mean of its divisors is an integer number (37224161).

Almost surely, 2^206164566 is an apocalyptic number.

206164566 is an abundant number, since it is smaller than the sum of its proper divisors (240525366).

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

206164566 is a wasteful number, since it uses less digits than its factorization.

206164566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11453595 (or 11453592 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 206164566 is about 14358.4318781683. The cubic root of 206164566 is about 590.7512846283.

The spelling of 206164566 in words is "two hundred six million, one hundred sixty-four thousand, five hundred sixty-six".