6689928 has 32 divisors (see below), whose sum is σ = 19114560. Its totient is φ = 1911360.

The previous prime is 6689909. The next prime is 6689971. The reversal of 6689928 is 8299866.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19743 + ... + 20078.

It is an arithmetic number, because the mean of its divisors is an integer number (597330).

Almost surely, 2^6689928 is an apocalyptic number.

It is an amenable number.

6689928 is an abundant number, since it is smaller than the sum of its proper divisors (12424632).

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

6689928 is a wasteful number, since it uses less digits than its factorization.

6689928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39837 (or 39833 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The square root of 6689928 is about 2586.4895128339. The cubic root of 6689928 is about 188.4258492036.

The spelling of 6689928 in words is "six million, six hundred eighty-nine thousand, nine hundred twenty-eight".