864363880 has 32 divisors (see below), whose sum is σ = 1949248800. Its totient is φ = 344958016.

The previous prime is 864363853. The next prime is 864363881. The reversal of 864363880 is 88363468.

It is a self number, because there is not a number n which added to its sum of digits gives 864363880.

It is not an unprimeable number, because it can be changed into a prime (864363881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6670 + ... + 42109.

It is an arithmetic number, because the mean of its divisors is an integer number (60914025).

Almost surely, 2^864363880 is an apocalyptic number.

It is an amenable number.

864363880 is an abundant number, since it is smaller than the sum of its proper divisors (1084884920).

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

864363880 is a wasteful number, since it uses less digits than its factorization.

864363880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49233 (or 49229 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 46.

The square root of 864363880 is about 29400.0659863205. The cubic root of 864363880 is about 952.5743215568.

The spelling of 864363880 in words is "eight hundred sixty-four million, three hundred sixty-three thousand, eight hundred eighty".