6688005 has 16 divisors (see below), whose sum is σ = 10950720. Its totient is φ = 3483648.

The previous prime is 6688001. The next prime is 6688013. The reversal of 6688005 is 5008866.

6688005 is nontrivially palindromic in base 6.

6688005 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6688005 - 2² = 6688001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6688001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4540 + ... + 5829.

It is an arithmetic number, because the mean of its divisors is an integer number (684420).

Almost surely, 2^6688005 is an apocalyptic number.

It is an amenable number.

6688005 is a deficient number, since it is larger than the sum of its proper divisors (4262715).

6688005 is a wasteful number, since it uses less digits than its factorization.

6688005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10420.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 6688005 is about 2586.1177467393. The cubic root of 6688005 is about 188.4077933226.

The spelling of 6688005 in words is "six million, six hundred eighty-eight thousand, five".