8688516389 has 6 divisors (see below), whose sum is σ = 10107049734. Its totient is φ = 7447299720.

The previous prime is 8688516367. The next prime is 8688516457. The reversal of 8688516389 is 9836158868.

It can be written as a sum of positive squares in only one way, i.e., 6402720289 + 2285796100 = 80017^2 + 47810^2 .

It is a de Polignac number, because none of the positive numbers 2^k-8688516389 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 (8688516329) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 88658282 + ... + 88658379.

It is an arithmetic number, because the mean of its divisors is an integer number (1684508289).

Almost surely, 2^8688516389 is an apocalyptic number.

It is an amenable number.

8688516389 is a deficient number, since it is larger than the sum of its proper divisors (1418533345).

8688516389 is a wasteful number, since it uses less digits than its factorization.

8688516389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177316675 (or 177316668 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 62.

The square root of 8688516389 is about 93212.2115873237. The cubic root of 8688516389 is about 2055.8047959642.

The spelling of 8688516389 in words is "eight billion, six hundred eighty-eight million, five hundred sixteen thousand, three hundred eighty-nine".