868563800 has 96 divisors (see below), whose sum is σ = 2188453680. Its totient is φ = 318681600.

The previous prime is 868563799. The next prime is 868563809. The reversal of 868563800 is 8365868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868563809) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 448835 + ... + 450765.

Almost surely, 2^868563800 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 868563800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1094226840).

868563800 is an abundant number, since it is smaller than the sum of its proper divisors (1319889880).

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

868563800 is a wasteful number, since it uses less digits than its factorization.

868563800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133 (or 2124 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 868563800 is about 29471.4064815373. The cubic root of 868563800 is about 954.1146734274.

The spelling of 868563800 in words is "eight hundred sixty-eight million, five hundred sixty-three thousand, eight hundred".