6688632544 has 24 divisors (see below), whose sum is σ = 14365359288. Its totient is φ = 3040287360.

The previous prime is 6688632497. The next prime is 6688632589. The reversal of 6688632544 is 4452368866.

It is a junction number, because it is equal to n+sod(n) for n = 6688632491 and 6688632500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9500547 + ... + 9501250.

It is an arithmetic number, because the mean of its divisors is an integer number (598556637).

Almost surely, 2^6688632544 is an apocalyptic number.

It is an amenable number.

6688632544 is an abundant number, since it is smaller than the sum of its proper divisors (7676726744).

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

6688632544 is a wasteful number, since it uses less digits than its factorization.

6688632544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19001818 (or 19001810 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 52.

The square root of 6688632544 is about 81784.0604518998. The cubic root of 6688632544 is about 1884.1368598580.

The spelling of 6688632544 in words is "six billion, six hundred eighty-eight million, six hundred thirty-two thousand, five hundred forty-four".