216707712 has 64 divisors (see below), whose sum is σ = 619923360. Its totient is φ = 66677760.

The previous prime is 216707707. The next prime is 216707713. The reversal of 216707712 is 217707612.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (216707713) 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, 16714 + ... + 26697.

Almost surely, 2^216707712 is an apocalyptic number.

It is an amenable number.

216707712 is an abundant number, since it is smaller than the sum of its proper divisors (403215648).

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

216707712 is a wasteful number, since it uses less digits than its factorization.

216707712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43441 (or 43429 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 33.

The square root of 216707712 is about 14720.9956185035. The cubic root of 216707712 is about 600.6545745162.

The spelling of 216707712 in words is "two hundred sixteen million, seven hundred seven thousand, seven hundred twelve".