865982016 has 224 divisors, whose sum is σ = 2699308800. Its totient is φ = 275083776.

The previous prime is 865981973. The next prime is 865982017. The reversal of 865982016 is 610289568.

865982016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865982017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3219130 + ... + 3219398.

Almost surely, 2^865982016 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 865982016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1349654400).

865982016 is an abundant number, since it is smaller than the sum of its proper divisors (1833326784).

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

865982016 is an equidigital number, since it uses as much as digits as its factorization.

865982016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 865982016 is about 29427.5723769393. The cubic root of 865982016 is about 953.1683745858.

The spelling of 865982016 in words is "eight hundred sixty-five million, nine hundred eighty-two thousand, sixteen".