216310689 has 32 divisors (see below), whose sum is σ = 367200000. Its totient is φ = 123282432.

The previous prime is 216310667. The next prime is 216310691. The reversal of 216310689 is 986013612.

It is not a de Polignac number, because 216310689 - 2¹⁶ = 216245153 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (216310189) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 83587 + ... + 86135.

It is an arithmetic number, because the mean of its divisors is an integer number (11475000).

Almost surely, 2^216310689 is an apocalyptic number.

It is an amenable number.

216310689 is a deficient number, since it is larger than the sum of its proper divisors (150889311).

216310689 is a wasteful number, since it uses less digits than its factorization.

216310689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3014 (or 3008 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 216310689 is about 14707.5045130029. The cubic root of 216310689 is about 600.2875371819.

The spelling of 216310689 in words is "two hundred sixteen million, three hundred ten thousand, six hundred eighty-nine".