864656360 has 48 divisors (see below), whose sum is σ = 1968302700. Its totient is φ = 341851136.

The previous prime is 864656357. The next prime is 864656399. The reversal of 864656360 is 63656468.

It can be written as a sum of positive squares in 6 ways, for example, as 341436484 + 523219876 = 18478^2 + 22874^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315476 + ... + 318204.

Almost surely, 2^864656360 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 864656360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (984151350).

864656360 is an abundant number, since it is smaller than the sum of its proper divisors (1103646340).

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

864656360 is a wasteful number, since it uses less digits than its factorization.

864656360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2918 (or 2825 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 44.

The square root of 864656360 is about 29405.0397041051. The cubic root of 864656360 is about 952.6817522061.

The spelling of 864656360 in words is "eight hundred sixty-four million, six hundred fifty-six thousand, three hundred sixty".