6687916 has 12 divisors (see below), whose sum is σ = 11869200. Its totient is φ = 3296720.

The previous prime is 6687881. The next prime is 6687931. The reversal of 6687916 is 6197866.

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, 11491 + ... + 12058.

It is an arithmetic number, because the mean of its divisors is an integer number (989100).

Almost surely, 2^6687916 is an apocalyptic number.

It is an amenable number.

6687916 is a deficient number, since it is larger than the sum of its proper divisors (5181284).

6687916 is a wasteful number, since it uses less digits than its factorization.

6687916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23624 (or 23622 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 6687916 is about 2586.1005394222. The cubic root of 6687916 is about 188.4069575792.

The spelling of 6687916 in words is "six million, six hundred eighty-seven thousand, nine hundred sixteen".