206215630 has 16 divisors (see below), whose sum is σ = 371354544. Its totient is φ = 82449280.

The previous prime is 206215619. The next prime is 206215637. The reversal of 206215630 is 36512602.

206215630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 206215595 and 206215604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206215637) 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, 34869 + ... + 40351.

It is an arithmetic number, because the mean of its divisors is an integer number (23209659).

Almost surely, 2^206215630 is an apocalyptic number.

206215630 is a deficient number, since it is larger than the sum of its proper divisors (165138914).

206215630 is a wasteful number, since it uses less digits than its factorization.

206215630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9251.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 206215630 is about 14360.2099566824. The cubic root of 206215630 is about 590.8000541363.

The spelling of 206215630 in words is "two hundred six million, two hundred fifteen thousand, six hundred thirty".