6689607 has 8 divisors (see below), whose sum is σ = 9087984. Its totient is φ = 4375488.

The previous prime is 6689593. The next prime is 6689611. The reversal of 6689607 is 7069866.

It is a happy number.

6689607 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6689607 - 2⁴ = 6689591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6684607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20878 + ... + 21195.

It is an arithmetic number, because the mean of its divisors is an integer number (1135998).

Almost surely, 2^6689607 is an apocalyptic number.

6689607 is a deficient number, since it is larger than the sum of its proper divisors (2398377).

6689607 is a wasteful number, since it uses less digits than its factorization.

6689607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42129.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 6689607 is about 2586.4274588706. The cubic root of 6689607 is about 188.4228354360.

The spelling of 6689607 in words is "six million, six hundred eighty-nine thousand, six hundred seven".