6688340067 has 8 divisors (see below), whose sum is σ = 8943051024. Its totient is φ = 4446261248.

The previous prime is 6688340063. The next prime is 6688340143. The reversal of 6688340067 is 7600438866.

It is a happy number.

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 6688340067 - 2² = 6688340063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6688339998 and 6688340025.

It is not an unprimeable number, because it can be changed into a prime (6688340063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3156798 + ... + 3158915.

It is an arithmetic number, because the mean of its divisors is an integer number (1117881378).

Almost surely, 2^6688340067 is an apocalyptic number.

6688340067 is a deficient number, since it is larger than the sum of its proper divisors (2254710957).

6688340067 is a wasteful number, since it uses less digits than its factorization.

6688340067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6316069.

The product of its (nonzero) digits is 1161216, while the sum is 48.

The square root of 6688340067 is about 81782.2723271981. The cubic root of 6688340067 is about 1884.1093966097.

The spelling of 6688340067 in words is "six billion, six hundred eighty-eight million, three hundred forty thousand, sixty-seven".