8659985615 has 16 divisors (see below), whose sum is σ = 10687046688. Its totient is φ = 6733723776.

The previous prime is 8659985591. The next prime is 8659985617. The reversal of 8659985615 is 5165899568.

It is a de Polignac number, because none of the positive numbers 2^k-8659985615 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8659985617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124352 + ... + 181061.

It is an arithmetic number, because the mean of its divisors is an integer number (667940418).

Almost surely, 2^8659985615 is an apocalyptic number.

8659985615 is a deficient number, since it is larger than the sum of its proper divisors (2027061073).

8659985615 is a wasteful number, since it uses less digits than its factorization.

8659985615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305578.

The product of its digits is 23328000, while the sum is 62.

The square root of 8659985615 is about 93059.0437034467. The cubic root of 8659985615 is about 2053.5520899087.

The spelling of 8659985615 in words is "eight billion, six hundred fifty-nine million, nine hundred eighty-five thousand, six hundred fifteen".