216616206 has 16 divisors (see below), whose sum is σ = 434350800. Its totient is φ = 72019008.

The previous prime is 216616181. The next prime is 216616217. The reversal of 216616206 is 602616612.

216616206 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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44071 + ... + 48738.

It is an arithmetic number, because the mean of its divisors is an integer number (27146925).

Almost surely, 2^216616206 is an apocalyptic number.

216616206 is an abundant number, since it is smaller than the sum of its proper divisors (217734594).

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

216616206 is a wasteful number, since it uses less digits than its factorization.

216616206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93203.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 216616206 is about 14717.8872804489. The cubic root of 216616206 is about 600.5700194028.

The spelling of 216616206 in words is "two hundred sixteen million, six hundred sixteen thousand, two hundred six".