6688115 has 8 divisors (see below), whose sum is σ = 9172320. Its totient is φ = 4586112.

The previous prime is 6688111. The next prime is 6688117. The reversal of 6688115 is 5118866.

6688115 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6688115 - 2² = 6688111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 191089 = 6688115 / (6 + 6 + 8 + 8 + 1 + 1 + 5).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6688111) 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, 95510 + ... + 95579.

It is an arithmetic number, because the mean of its divisors is an integer number (1146540).

Almost surely, 2^6688115 is an apocalyptic number.

6688115 is a deficient number, since it is larger than the sum of its proper divisors (2484205).

6688115 is a wasteful number, since it uses less digits than its factorization.

6688115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191101.

The product of its digits is 11520, while the sum is 35.

The square root of 6688115 is about 2586.1390140516. The cubic root of 6688115 is about 188.4088262536.

The spelling of 6688115 in words is "six million, six hundred eighty-eight thousand, one hundred fifteen".