868515560 has 64 divisors (see below), whose sum is σ = 2166825600. Its totient is φ = 310636800.

The previous prime is 868515547. The next prime is 868515589. The reversal of 868515560 is 65515868.

It is a super-2 number, since 2×868515560² = 1508638555924227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 10661 + ... + 43019.

It is an arithmetic number, because the mean of its divisors is an integer number (33856650).

Almost surely, 2^868515560 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 868515560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1083412800).

868515560 is an abundant number, since it is smaller than the sum of its proper divisors (1298310040).

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

868515560 is a wasteful number, since it uses less digits than its factorization.

868515560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32442 (or 32438 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 44.

The square root of 868515560 is about 29470.5880497828. The cubic root of 868515560 is about 954.0970092697.

The spelling of 868515560 in words is "eight hundred sixty-eight million, five hundred fifteen thousand, five hundred sixty".