216606612 has 24 divisors (see below), whose sum is σ = 532016800. Its totient is φ = 68402016.

The previous prime is 216606581. The next prime is 216606629.

216606612 is nontrivially palindromic in base 10.

216606612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 216606612.

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, 474787 + ... + 475242.

Almost surely, 2^216606612 is an apocalyptic number.

It is an amenable number.

216606612 is an abundant number, since it is smaller than the sum of its proper divisors (315410188).

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

216606612 is a wasteful number, since it uses less digits than its factorization.

216606612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950055 (or 950053 counting only the distinct ones).

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

The square root of 216606612 is about 14717.5613469080. The cubic root of 216606612 is about 600.5611527934.

The spelling of 216606612 in words is "two hundred sixteen million, six hundred six thousand, six hundred twelve".