216889614 has 12 divisors (see below), whose sum is σ = 469927536. Its totient is φ = 72296532.

The previous prime is 216889591. The next prime is 216889619. The reversal of 216889614 is 416988612.

216889614 is a `hidden beast` number, since 21 + 6 + 8 + 8 + 9 + 614 = 666.

It is a super-2 number, since 2×216889614² = 94082209322137992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 216889614.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216889619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6024694 + ... + 6024729.

It is an arithmetic number, because the mean of its divisors is an integer number (39160628).

Almost surely, 2^216889614 is an apocalyptic number.

216889614 is an abundant number, since it is smaller than the sum of its proper divisors (253037922).

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

216889614 is a wasteful number, since it uses less digits than its factorization.

216889614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12049431 (or 12049428 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 216889614 is about 14727.1726410740. The cubic root of 216889614 is about 600.8225883985.

The spelling of 216889614 in words is "two hundred sixteen million, eight hundred eighty-nine thousand, six hundred fourteen".