864863800 has 48 divisors (see below), whose sum is σ = 2015496000. Its totient is φ = 345139200.

The previous prime is 864863749. The next prime is 864863801. The reversal of 864863800 is 8368468.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864863801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84985 + ... + 94615.

It is an arithmetic number, because the mean of its divisors is an integer number (41989500).

Almost surely, 2^864863800 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 864863800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1007748000).

864863800 is an abundant number, since it is smaller than the sum of its proper divisors (1150632200).

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

864863800 is a wasteful number, since it uses less digits than its factorization.

864863800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10096 (or 10087 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 864863800 is about 29408.5667790867. The cubic root of 864863800 is about 952.7579321815.

The spelling of 864863800 in words is "eight hundred sixty-four million, eight hundred sixty-three thousand, eight hundred".