206630566 has 16 divisors (see below), whose sum is σ = 320246784. Its totient is φ = 99928584.

The previous prime is 206630561. The next prime is 206630569. The reversal of 206630566 is 665036602.

206630566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206630561) 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, 2806 + ... + 20521.

It is an arithmetic number, because the mean of its divisors is an integer number (20015424).

Almost surely, 2^206630566 is an apocalyptic number.

206630566 is a deficient number, since it is larger than the sum of its proper divisors (113616218).

206630566 is a wasteful number, since it uses less digits than its factorization.

206630566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23475.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 206630566 is about 14374.6501174811. The cubic root of 206630566 is about 591.1960473544.

The spelling of 206630566 in words is "two hundred six million, six hundred thirty thousand, five hundred sixty-six".