8761688621 has 16 divisors (see below), whose sum is σ = 10073955840. Its totient is φ = 7464683520.

The previous prime is 8761688591. The next prime is 8761688699. The reversal of 8761688621 is 1268861678.

It is not a de Polignac number, because 8761688621 - 2²⁶ = 8694579757 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8761688321) 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, 1023260 + ... + 1031786.

It is an arithmetic number, because the mean of its divisors is an integer number (629622240).

Almost surely, 2^8761688621 is an apocalyptic number.

It is an amenable number.

8761688621 is a deficient number, since it is larger than the sum of its proper divisors (1312267219).

8761688621 is a wasteful number, since it uses less digits than its factorization.

8761688621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9404.

The product of its digits is 1548288, while the sum is 53.

The square root of 8761688621 is about 93603.8921252744. The cubic root of 8761688621 is about 2061.5598062410.

The spelling of 8761688621 in words is "eight billion, seven hundred sixty-one million, six hundred eighty-eight thousand, six hundred twenty-one".