864801864 has 48 divisors (see below), whose sum is σ = 2346926400. Its totient is φ = 287682144.

The previous prime is 864801841. The next prime is 864801887. The reversal of 864801864 is 468108468.

It is an interprime number because it is at equal distance from previous prime (864801841) and next prime (864801887).

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, 24277 + ... + 48155.

It is an arithmetic number, because the mean of its divisors is an integer number (48894300).

Almost surely, 2^864801864 is an apocalyptic number.

It is an amenable number.

864801864 is an abundant number, since it is smaller than the sum of its proper divisors (1482124536).

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

864801864 is a wasteful number, since it uses less digits than its factorization.

864801864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24394 (or 24387 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The square root of 864801864 is about 29407.5137337382. The cubic root of 864801864 is about 952.7351881672.

The spelling of 864801864 in words is "eight hundred sixty-four million, eight hundred one thousand, eight hundred sixty-four".