216678712 has 16 divisors (see below), whose sum is σ = 406458360. Its totient is φ = 108289824.

The previous prime is 216678703. The next prime is 216678713. The reversal of 216678712 is 217876612.

216678712 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216678713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17923 + ... + 27469.

Almost surely, 2^216678712 is an apocalyptic number.

It is an amenable number.

216678712 is a deficient number, since it is larger than the sum of its proper divisors (189779648).

216678712 is a wasteful number, since it uses less digits than its factorization.

216678712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12390 (or 12386 counting only the distinct ones).

The product of its digits is 56448, while the sum is 40.

The square root of 216678712 is about 14720.0105978223. The cubic root of 216678712 is about 600.6277799618.

The spelling of 216678712 in words is "two hundred sixteen million, six hundred seventy-eight thousand, seven hundred twelve".