985016865 has 24 divisors (see below), whose sum is σ = 1833338880. Its totient is φ = 450293088.

The previous prime is 985016863. The next prime is 985016881. The reversal of 985016865 is 568610589.

It is not a de Polignac number, because 985016865 - 2¹ = 985016863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (985016863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 669345 + ... + 670814.

It is an arithmetic number, because the mean of its divisors is an integer number (76389120).

Almost surely, 2^985016865 is an apocalyptic number.

It is an amenable number.

985016865 is a deficient number, since it is larger than the sum of its proper divisors (848322015).

985016865 is a wasteful number, since it uses less digits than its factorization.

985016865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340181 (or 1340174 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 48.

The square root of 985016865 is about 31384.9783335914. The cubic root of 985016865 is about 994.9804681233.

The spelling of 985016865 in words is "nine hundred eighty-five million, sixteen thousand, eight hundred sixty-five".