6689441 has 4 divisors (see below), whose sum is σ = 7297584. Its totient is φ = 6081300.

The previous prime is 6689429. The next prime is 6689491. The reversal of 6689441 is 1449866.

6689441 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6689441 - 2⁶ = 6689377 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6689395 and 6689404.

It is not an unprimeable number, because it can be changed into a prime (6689491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304055 + ... + 304076.

It is an arithmetic number, because the mean of its divisors is an integer number (1824396).

Almost surely, 2^6689441 is an apocalyptic number.

It is an amenable number.

6689441 is a deficient number, since it is larger than the sum of its proper divisors (608143).

6689441 is a wasteful number, since it uses less digits than its factorization.

6689441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608142.

The product of its digits is 41472, while the sum is 38.

The square root of 6689441 is about 2586.3953680750. The cubic root of 6689441 is about 188.4212768766.

The spelling of 6689441 in words is "six million, six hundred eighty-nine thousand, four hundred forty-one".