8088691689 has 36 divisors (see below), whose sum is σ = 12662608140. Its totient is φ = 4973304960.

The previous prime is 8088691679. The next prime is 8088691703. The reversal of 8088691689 is 9861968808.

It can be written as a sum of positive squares in 6 ways, for example, as 144000000 + 7944691689 = 12000^2 + 89133^2 .

It is not a de Polignac number, because 8088691689 - 2⁴ = 8088691673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8088691649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3084799 + ... + 3087419.

It is an arithmetic number, because the mean of its divisors is an integer number (351739115).

Almost surely, 2^8088691689 is an apocalyptic number.

It is an amenable number.

8088691689 is a deficient number, since it is larger than the sum of its proper divisors (4573916451).

8088691689 is a wasteful number, since it uses less digits than its factorization.

8088691689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4682 (or 4666 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 63.

The square root of 8088691689 is about 89937.1541077435. The cubic root of 8088691689 is about 2007.3638278273.

The spelling of 8088691689 in words is "eight billion, eighty-eight million, six hundred ninety-one thousand, six hundred eighty-nine".