8685722880 has 144 divisors (see below), whose sum is σ = 30822375360. Its totient is φ = 2316183552.

The previous prime is 8685722867. The next prime is 8685722887. The reversal of 8685722880 is 882275868.

8685722880 is a `hidden beast` number, since 8 + 68 + 572 + 2 + 8 + 8 + 0 = 666.

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 (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8685722887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91102 + ... + 160221.

Almost surely, 2^8685722880 is an apocalyptic number.

8685722880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8685722880 is an abundant number, since it is smaller than the sum of its proper divisors (22136652480).

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

8685722880 is a wasteful number, since it uses less digits than its factorization.

8685722880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251353 (or 251333 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 54.

The square root of 8685722880 is about 93197.2257097817. The cubic root of 8685722880 is about 2055.5844466918.

The spelling of 8685722880 in words is "eight billion, six hundred eighty-five million, seven hundred twenty-two thousand, eight hundred eighty".