6689108368 has 10 divisors (see below), whose sum is σ = 12960147494. Its totient is φ = 3344554176.

The previous prime is 6689108353. The next prime is 6689108383. The reversal of 6689108368 is 8638019866.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6689108353) and next prime (6689108383).

It can be written as a sum of positive squares in only one way, i.e., 6299914384 + 389193984 = 79372^2 + 19728^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209034621 + ... + 209034652.

Almost surely, 2^6689108368 is an apocalyptic number.

It is an amenable number.

6689108368 is a deficient number, since it is larger than the sum of its proper divisors (6271039126).

6689108368 is a wasteful number, since it uses less digits than its factorization.

6689108368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418069281 (or 418069275 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 55.

The square root of 6689108368 is about 81786.9694266758. The cubic root of 6689108368 is about 1884.1815374645.

The spelling of 6689108368 in words is "six billion, six hundred eighty-nine million, one hundred eight thousand, three hundred sixty-eight".