206563630 has 96 divisors (see below), whose sum is σ = 484876800. Its totient is φ = 61865856.

The previous prime is 206563603. The next prime is 206563639. The reversal of 206563630 is 36365602.

It is a junction number, because it is equal to n+sod(n) for n = 206563592 and 206563601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206563639) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 224311 + ... + 225229.

It is an arithmetic number, because the mean of its divisors is an integer number (5050800).

Almost surely, 2^206563630 is an apocalyptic number.

206563630 is an abundant number, since it is smaller than the sum of its proper divisors (278313170).

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

206563630 is a wasteful number, since it uses less digits than its factorization.

206563630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978 (or 965 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 206563630 is about 14372.3216635309. The cubic root of 206563630 is about 591.1322030207.

The spelling of 206563630 in words is "two hundred six million, five hundred sixty-three thousand, six hundred thirty".