8564703872 has 128 divisors (see below), whose sum is σ = 18379094400. Its totient is φ = 3963617280.

The previous prime is 8564703817. The next prime is 8564703877. The reversal of 8564703872 is 2783074658.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-5 number, since 5×8564703872⁵ (a number of 51 digits) contains 55555 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8564703872.

It is not an unprimeable number, because it can be changed into a prime (8564703877) by changing a digit.

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, 33325568 + ... + 33325824.

It is an arithmetic number, because the mean of its divisors is an integer number (143586675).

Almost surely, 2^8564703872 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 8564703872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9189547200).

8564703872 is an abundant number, since it is smaller than the sum of its proper divisors (9814390528).

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

8564703872 is a wasteful number, since it uses less digits than its factorization.

8564703872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 50.

The square root of 8564703872 is about 92545.6853235201. The cubic root of 8564703872 is about 2045.9928761083.

The spelling of 8564703872 in words is "eight billion, five hundred sixty-four million, seven hundred three thousand, eight hundred seventy-two".