216616698 has 24 divisors (see below), whose sum is σ = 470533908. Its totient is φ = 72021312.

The previous prime is 216616693. The next prime is 216616723. The reversal of 216616698 is 896616612.

216616698 is a `hidden beast` number, since 21 + 6 + 616 + 6 + 9 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 194686209 + 21930489 = 13953^2 + 4683^2 .

It is not an unprimeable number, because it can be changed into a prime (216616693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8011 + ... + 22302.

Almost surely, 2^216616698 is an apocalyptic number.

216616698 is an abundant number, since it is smaller than the sum of its proper divisors (253917210).

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

216616698 is a wasteful number, since it uses less digits than its factorization.

216616698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30718 (or 30715 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 216616698 is about 14717.9039947949. The cubic root of 216616698 is about 600.5704740936.

The spelling of 216616698 in words is "two hundred sixteen million, six hundred sixteen thousand, six hundred ninety-eight".