868560880 has 80 divisors (see below), whose sum is σ = 2208796128. Its totient is φ = 315008000.

The previous prime is 868560877. The next prime is 868560911. The reversal of 868560880 is 88065868.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404610 + ... + 406750.

Almost surely, 2^868560880 is an apocalyptic number.

868560880 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 868560880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1104398064).

868560880 is an abundant number, since it is smaller than the sum of its proper divisors (1340235248).

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

868560880 is a wasteful number, since it uses less digits than its factorization.

868560880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626 (or 2620 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 49.

The square root of 868560880 is about 29471.3569419530. The cubic root of 868560880 is about 954.1136042225.

The spelling of 868560880 in words is "eight hundred sixty-eight million, five hundred sixty thousand, eight hundred eighty".