6687168 has 56 divisors (see below), whose sum is σ = 18318480. Its totient is φ = 2150400.

The previous prime is 6687167. The next prime is 6687173. The reversal of 6687168 is 8617866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6687167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4968 + ... + 6168.

Almost surely, 2^6687168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6687168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9159240).

6687168 is an abundant number, since it is smaller than the sum of its proper divisors (11631312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6687168 is a wasteful number, since it uses less digits than its factorization.

6687168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245 (or 1235 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 6687168 is about 2585.9559160976. The cubic root of 6687168 is about 188.3999332855.

The spelling of 6687168 in words is "six million, six hundred eighty-seven thousand, one hundred sixty-eight".