216065412 has 36 divisors (see below), whose sum is σ = 563786496. Its totient is φ = 69698160.

The previous prime is 216065401. The next prime is 216065413. The reversal of 216065412 is 214560612.

216065412 is a `hidden beast` number, since 2 + 1 + 6 + 0 + 654 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216065413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95688 + ... + 97919.

It is an arithmetic number, because the mean of its divisors is an integer number (15660736).

Almost surely, 2^216065412 is an apocalyptic number.

It is an amenable number.

216065412 is an abundant number, since it is smaller than the sum of its proper divisors (347721084).

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

216065412 is a wasteful number, since it uses less digits than its factorization.

216065412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193648 (or 193643 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 216065412 is about 14699.1636496775. The cubic root of 216065412 is about 600.0605605538.

The spelling of 216065412 in words is "two hundred sixteen million, sixty-five thousand, four hundred twelve".