6685679 has 16 divisors (see below), whose sum is σ = 8977920. Its totient is φ = 4808160.

The previous prime is 6685673. The next prime is 6685687. The reversal of 6685679 is 9765866.

It is not a de Polignac number, because 6685679 - 2²⁰ = 5637103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6685673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2339 + ... + 4340.

It is an arithmetic number, because the mean of its divisors is an integer number (561120).

Almost surely, 2^6685679 is an apocalyptic number.

6685679 is a deficient number, since it is larger than the sum of its proper divisors (2292241).

6685679 is a wasteful number, since it uses less digits than its factorization.

6685679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6710.

The product of its digits is 544320, while the sum is 47.

The square root of 6685679 is about 2585.6679987964. The cubic root of 6685679 is about 188.3859488742.

The spelling of 6685679 in words is "six million, six hundred eighty-five thousand, six hundred seventy-nine".