216059616 has 96 divisors (see below), whose sum is σ = 636037920. Its totient is φ = 71350272.

The previous prime is 216059587. The next prime is 216059629. The reversal of 216059616 is 616950612.

216059616 is a `hidden beast` number, since 2 + 1 + 60 + 596 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96526 + ... + 98738.

It is an arithmetic number, because the mean of its divisors is an integer number (6625395).

Almost surely, 2^216059616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216059616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318018960).

216059616 is an abundant number, since it is smaller than the sum of its proper divisors (419978304).

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

216059616 is a wasteful number, since it uses less digits than its factorization.

216059616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345 (or 2331 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 216059616 is about 14698.9664942812. The cubic root of 216059616 is about 600.0551949224.

It can be divided in two parts, 2160596 and 16, that added together give a palindrome (2160612).

The spelling of 216059616 in words is "two hundred sixteen million, fifty-nine thousand, six hundred sixteen".