6885685 has 4 divisors (see below), whose sum is σ = 8262828. Its totient is φ = 5508544.

The previous prime is 6885679. The next prime is 6885691. The reversal of 6885685 is 5865886.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (6885679) and next prime (6885691).

It can be written as a sum of positive squares in 2 ways, for example, as 4553956 + 2331729 = 2134^2 + 1527^2 .

It is a cyclic number.

It is not a de Polignac number, because 6885685 - 2³ = 6885677 is a prime.

It is a super-3 number, since 3×6885685³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688564 + ... + 688573.

It is an arithmetic number, because the mean of its divisors is an integer number (2065707).

Almost surely, 2^6885685 is an apocalyptic number.

It is an amenable number.

6885685 is a deficient number, since it is larger than the sum of its proper divisors (1377143).

6885685 is a wasteful number, since it uses less digits than its factorization.

6885685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377142.

The product of its digits is 460800, while the sum is 46.

The square root of 6885685 is about 2624.0588789126. The cubic root of 6885685 is about 190.2460800418.

The spelling of 6885685 in words is "six million, eight hundred eighty-five thousand, six hundred eighty-five".