213606216 has 48 divisors (see below), whose sum is σ = 580329360. Its totient is φ = 70979040.

The previous prime is 213606209. The next prime is 213606229. The reversal of 213606216 is 612606312.

213606216 is a `hidden beast` number, since 2 + 1 + 36 + 0 + 621 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 213606216.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19351 + ... + 28313.

It is an arithmetic number, because the mean of its divisors is an integer number (12090195).

Almost surely, 2^213606216 is an apocalyptic number.

It is an amenable number.

213606216 is an abundant number, since it is smaller than the sum of its proper divisors (366723144).

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

213606216 is a wasteful number, since it uses less digits than its factorization.

213606216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9306 (or 9299 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 213606216 is about 14615.2733809532. The cubic root of 213606216 is about 597.7752946722.

The spelling of 213606216 in words is "two hundred thirteen million, six hundred six thousand, two hundred sixteen".