8653993568 has 72 divisors (see below), whose sum is σ = 18768289680. Its totient is φ = 3925011200.

The previous prime is 8653993493. The next prime is 8653993571.

8653993568 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 8653993568.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1968653 + ... + 1973043.

It is an arithmetic number, because the mean of its divisors is an integer number (260670690).

Almost surely, 2^8653993568 is an apocalyptic number.

8653993568 is a gapful number since it is divisible by the number (88) 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 8653993568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9384144840).

8653993568 is an abundant number, since it is smaller than the sum of its proper divisors (10114296112).

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

8653993568 is a wasteful number, since it uses less digits than its factorization.

8653993568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4932 (or 4913 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 62.

The square root of 8653993568 is about 93026.8432658015. The cubic root of 8653993568 is about 2053.0783470215.

The spelling of 8653993568 in words is "eight billion, six hundred fifty-three million, nine hundred ninety-three thousand, five hundred sixty-eight".