206563164 has 12 divisors (see below), whose sum is σ = 481980744. Its totient is φ = 68854384.

The previous prime is 206563163. The next prime is 206563169. The reversal of 206563164 is 461365602.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206563163) 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, 8606787 + ... + 8606810.

It is an arithmetic number, because the mean of its divisors is an integer number (40165062).

Almost surely, 2^206563164 is an apocalyptic number.

It is an amenable number.

206563164 is an abundant number, since it is smaller than the sum of its proper divisors (275417580).

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

206563164 is a wasteful number, since it uses less digits than its factorization.

206563164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17213604 (or 17213602 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 206563164 is about 14372.3054518056. The cubic root of 206563164 is about 591.1317584962.

The spelling of 206563164 in words is "two hundred six million, five hundred sixty-three thousand, one hundred sixty-four".