6685613 has 8 divisors (see below), whose sum is σ = 7355136. Its totient is φ = 6076620.

The previous prime is 6685603. The next prime is 6685619. The reversal of 6685613 is 3165866.

It is a de Polignac number, because none of the positive numbers 2^k-6685613 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6685619) 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, 1181 + ... + 3842.

It is an arithmetic number, because the mean of its divisors is an integer number (919392).

Almost surely, 2^6685613 is an apocalyptic number.

It is an amenable number.

6685613 is a deficient number, since it is larger than the sum of its proper divisors (669523).

6685613 is an equidigital number, since it uses as much as digits as its factorization.

6685613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5056 (or 5034 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 6685613 is about 2585.6552361055. The cubic root of 6685613 is about 188.3853289664.

The spelling of 6685613 in words is "six million, six hundred eighty-five thousand, six hundred thirteen".