868600800 has 144 divisors (see below), whose sum is σ = 3141517680. Its totient is φ = 231621120.

The previous prime is 868600787. The next prime is 868600841. The reversal of 868600800 is 8006868.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1494 + ... + 41706.

It is an arithmetic number, because the mean of its divisors is an integer number (21816095).

Almost surely, 2^868600800 is an apocalyptic number.

868600800 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 868600800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1570758840).

868600800 is an abundant number, since it is smaller than the sum of its proper divisors (2272916880).

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

868600800 is a wasteful number, since it uses less digits than its factorization.

868600800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40242 (or 40223 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 868600800 is about 29472.0342019346. The cubic root of 868600800 is about 954.1282213639.

The spelling of 868600800 in words is "eight hundred sixty-eight million, six hundred thousand, eight hundred".