6688087 has 4 divisors (see below), whose sum is σ = 7643536. Its totient is φ = 5732640.

The previous prime is 6688079. The next prime is 6688093. The reversal of 6688087 is 7808866.

It is a happy number.

6688087 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

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 6688087 - 2³ = 6688079 is a prime.

It is a Duffinian number.

6688087 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6688027) 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, 477714 + ... + 477727.

It is an arithmetic number, because the mean of its divisors is an integer number (1910884).

Almost surely, 2^6688087 is an apocalyptic number.

6688087 is a deficient number, since it is larger than the sum of its proper divisors (955449).

6688087 is an equidigital number, since it uses as much as digits as its factorization.

6688087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955448.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 6688087 is about 2586.1336005706. The cubic root of 6688087 is about 188.4085633268.

The spelling of 6688087 in words is "six million, six hundred eighty-eight thousand, eighty-seven".