8569985340 has 480 divisors, whose sum is σ = 30718679040. Its totient is φ = 1778112000.

The previous prime is 8569985339. The next prime is 8569985341. The reversal of 8569985340 is 435899658.

It is an interprime number because it is at equal distance from previous prime (8569985339) and next prime (8569985341).

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8569985341) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 84851290 + ... + 84851390.

It is an arithmetic number, because the mean of its divisors is an integer number (63997248).

Almost surely, 2^8569985340 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 8569985340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15359339520).

8569985340 is an abundant number, since it is smaller than the sum of its proper divisors (22148693700).

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

8569985340 is a wasteful number, since it uses less digits than its factorization.

8569985340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 57.

The square root of 8569985340 is about 92574.2153085836. The cubic root of 8569985340 is about 2046.4133469798.

The spelling of 8569985340 in words is "eight billion, five hundred sixty-nine million, nine hundred eighty-five thousand, three hundred forty".