6686613 has 12 divisors (see below), whose sum is σ = 10167040. Its totient is φ = 4223016.

The previous prime is 6686611. The next prime is 6686653. The reversal of 6686613 is 3166866.

It is not a de Polignac number, because 6686613 - 2¹ = 6686611 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 (6686611) 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 11 ways as a sum of consecutive naturals, for example, 19381 + ... + 19722.

Almost surely, 2^6686613 is an apocalyptic number.

It is an amenable number.

6686613 is a deficient number, since it is larger than the sum of its proper divisors (3480427).

6686613 is a wasteful number, since it uses less digits than its factorization.

6686613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39128 (or 39125 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 6686613 is about 2585.8486034569. The cubic root of 6686613 is about 188.3947210713.

The spelling of 6686613 in words is "six million, six hundred eighty-six thousand, six hundred thirteen".