864247648 has 48 divisors (see below), whose sum is σ = 1858901184. Its totient is φ = 392261760.

The previous prime is 864247633. The next prime is 864247663. The reversal of 864247648 is 846742468.

It is a happy number.

864247648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (864247633) and next prime (864247663).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317911 + ... + 320617.

It is an arithmetic number, because the mean of its divisors is an integer number (38727108).

Almost surely, 2^864247648 is an apocalyptic number.

864247648 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

864247648 is an abundant number, since it is smaller than the sum of its proper divisors (994653536).

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

864247648 is a wasteful number, since it uses less digits than its factorization.

864247648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3635 (or 3627 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 49.

The square root of 864247648 is about 29398.0891896055. The cubic root of 864247648 is about 952.5316217231.

The spelling of 864247648 in words is "eight hundred sixty-four million, two hundred forty-seven thousand, six hundred forty-eight".