206645234 has 16 divisors (see below), whose sum is σ = 328935168. Its totient is φ = 97027392.

The previous prime is 206645203. The next prime is 206645239. The reversal of 206645234 is 432546602.

206645234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 206645234.

It is not an unprimeable number, because it can be changed into a prime (206645239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9179 + ... + 22305.

It is an arithmetic number, because the mean of its divisors is an integer number (20558448).

Almost surely, 2^206645234 is an apocalyptic number.

206645234 is a deficient number, since it is larger than the sum of its proper divisors (122289934).

206645234 is a wasteful number, since it uses less digits than its factorization.

206645234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13609.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 206645234 is about 14375.1603121496. The cubic root of 206645234 is about 591.2100360212.

The spelling of 206645234 in words is "two hundred six million, six hundred forty-five thousand, two hundred thirty-four".