863646368 has 48 divisors (see below), whose sum is σ = 1927487520. Its totient is φ = 377623296.

The previous prime is 863646353. The next prime is 863646373.

863646368 is nontrivially palindromic in base 10.

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, 46730 + ... + 62537.

It is an arithmetic number, because the mean of its divisors is an integer number (40155990).

Almost surely, 2^863646368 is an apocalyptic number.

It is an amenable number.

863646368 is an abundant number, since it is smaller than the sum of its proper divisors (1063841152).

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

863646368 is a wasteful number, since it uses less digits than its factorization.

863646368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109309 (or 109301 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 50.

The square root of 863646368 is about 29387.8608952744. The cubic root of 863646368 is about 952.3106699742.

The spelling of 863646368 in words is "eight hundred sixty-three million, six hundred forty-six thousand, three hundred sixty-eight".