6689008836 has 60 divisors (see below), whose sum is σ = 18515016828. Its totient is φ = 2098510848.

The previous prime is 6689008831. The next prime is 6689008871. The reversal of 6689008836 is 6388009866.

It can be written as a sum of positive squares in 2 ways, for example, as 5425206336 + 1263802500 = 73656^2 + 35550^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (6689008831) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 601701 + ... + 612716.

Almost surely, 2^6689008836 is an apocalyptic number.

It is an amenable number.

6689008836 is an abundant number, since it is smaller than the sum of its proper divisors (11826007992).

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

6689008836 is a wasteful number, since it uses less digits than its factorization.

6689008836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214450 (or 1214439 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The square root of 6689008836 is about 81786.3609411740. The cubic root of 6689008836 is about 1884.1721920591.

The spelling of 6689008836 in words is "six billion, six hundred eighty-nine million, eight thousand, eight hundred thirty-six".