865056016 has 80 divisors (see below), whose sum is σ = 2037994560. Its totient is φ = 350576640.

The previous prime is 865055987. The next prime is 865056077. The reversal of 865056016 is 610650568.

865056016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49240 + ... + 64456.

It is an arithmetic number, because the mean of its divisors is an integer number (25474932).

Almost surely, 2^865056016 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 865056016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1018997280).

865056016 is an abundant number, since it is smaller than the sum of its proper divisors (1172938544).

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

865056016 is a wasteful number, since it uses less digits than its factorization.

865056016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15272 (or 15266 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 865056016 is about 29411.8346248581. The cubic root of 865056016 is about 952.8285104441.

The spelling of 865056016 in words is "eight hundred sixty-five million, fifty-six thousand, sixteen".