6688154868 has 24 divisors (see below), whose sum is σ = 15607038720. Its totient is φ = 2229192960.

The previous prime is 6688154867. The next prime is 6688154873. The reversal of 6688154868 is 8684518866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6688154867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222013 + ... + 250331.

It is an arithmetic number, because the mean of its divisors is an integer number (650293280).

Almost surely, 2^6688154868 is an apocalyptic number.

It is an amenable number.

6688154868 is an abundant number, since it is smaller than the sum of its proper divisors (8918883852).

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

6688154868 is a wasteful number, since it uses less digits than its factorization.

6688154868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48007 (or 48005 counting only the distinct ones).

The product of its digits is 17694720, while the sum is 60.

The square root of 6688154868 is about 81781.1400507476. The cubic root of 6688154868 is about 1884.0920062261.

The spelling of 6688154868 in words is "six billion, six hundred eighty-eight million, one hundred fifty-four thousand, eight hundred sixty-eight".