6887685 has 24 divisors (see below), whose sum is σ = 12820896. Its totient is φ = 3148320.

The previous prime is 6887681. The next prime is 6887753. The reversal of 6887685 is 5867886.

It is a happy number.

It is not a de Polignac number, because 6887685 - 2² = 6887681 is a prime.

6887685 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6887681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3951 + ... + 5420.

It is an arithmetic number, because the mean of its divisors is an integer number (534204).

Almost surely, 2^6887685 is an apocalyptic number.

It is an amenable number.

6887685 is a deficient number, since it is larger than the sum of its proper divisors (5933211).

6887685 is a wasteful number, since it uses less digits than its factorization.

6887685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9393 (or 9386 counting only the distinct ones).

The product of its digits is 645120, while the sum is 48.

The square root of 6887685 is about 2624.4399402539. The cubic root of 6887685 is about 190.2644977363.

The spelling of 6887685 in words is "six million, eight hundred eighty-seven thousand, six hundred eighty-five".