864910216 has 64 divisors (see below), whose sum is σ = 1732389120. Its totient is φ = 403941120.

The previous prime is 864910171. The next prime is 864910217. The reversal of 864910216 is 612019468.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (864910217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2951766 + ... + 2952058.

It is an arithmetic number, because the mean of its divisors is an integer number (27068580).

Almost surely, 2^864910216 is an apocalyptic number.

It is an amenable number.

864910216 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

864910216 is a wasteful number, since it uses less digits than its factorization.

864910216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 864910216 is about 29409.3559263035. The cubic root of 864910216 is about 952.7749762606.

The spelling of 864910216 in words is "eight hundred sixty-four million, nine hundred ten thousand, two hundred sixteen".