6686423 has 16 divisors (see below), whose sum is σ = 7557120. Its totient is φ = 5878656.

The previous prime is 6686419. The next prime is 6686437. The reversal of 6686423 is 3246866.

It is a cyclic number.

It is not a de Polignac number, because 6686423 - 2² = 6686419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6686413) 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, 40940 + ... + 41102.

It is an arithmetic number, because the mean of its divisors is an integer number (472320).

Almost surely, 2^6686423 is an apocalyptic number.

6686423 is a deficient number, since it is larger than the sum of its proper divisors (870697).

6686423 is a wasteful number, since it uses less digits than its factorization.

6686423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326.

The product of its digits is 41472, while the sum is 35.

The square root of 6686423 is about 2585.8118647728. The cubic root of 6686423 is about 188.3929366435.

The spelling of 6686423 in words is "six million, six hundred eighty-six thousand, four hundred twenty-three".