6808691 has 4 divisors (see below), whose sum is σ = 6817752. Its totient is φ = 6799632.

The previous prime is 6808657. The next prime is 6808699. The reversal of 6808691 is 1968086.

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

It is a cyclic number.

It is not a de Polignac number, because 6808691 - 2¹⁴ = 6792307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6808699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3290 + ... + 4943.

It is an arithmetic number, because the mean of its divisors is an integer number (1704438).

Almost surely, 2^6808691 is an apocalyptic number.

6808691 is a deficient number, since it is larger than the sum of its proper divisors (9061).

6808691 is an equidigital number, since it uses as much as digits as its factorization.

6808691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9060.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 6808691 is about 2609.3468531416. The cubic root of 6808691 is about 189.5343259015.

The spelling of 6808691 in words is "six million, eight hundred eight thousand, six hundred ninety-one".