6687408068 has 24 divisors (see below), whose sum is σ = 12796527744. Its totient is φ = 3032669600.

The previous prime is 6687408059. The next prime is 6687408097. The reversal of 6687408068 is 8608047866.

It is a happy number.

It is an unprimeable number.

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, 157355 + ... + 195282.

It is an arithmetic number, because the mean of its divisors is an integer number (533188656).

Almost surely, 2^6687408068 is an apocalyptic number.

It is an amenable number.

6687408068 is a deficient number, since it is larger than the sum of its proper divisors (6109119676).

6687408068 is a wasteful number, since it uses less digits than its factorization.

6687408068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353083 (or 353081 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 53.

The square root of 6687408068 is about 81776.5740783997. The cubic root of 6687408068 is about 1884.0218776525.

The spelling of 6687408068 in words is "six billion, six hundred eighty-seven million, four hundred eight thousand, sixty-eight".