6886648665 has 48 divisors (see below), whose sum is σ = 12947712960. Its totient is φ = 3365919360.

The previous prime is 6886648631. The next prime is 6886648673. The reversal of 6886648665 is 5668466886.

It is not a de Polignac number, because 6886648665 - 2⁸ = 6886648409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38970 + ... + 123660.

It is an arithmetic number, because the mean of its divisors is an integer number (269744020).

Almost surely, 2^6886648665 is an apocalyptic number.

6886648665 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6886648665 is a deficient number, since it is larger than the sum of its proper divisors (6061064295).

6886648665 is a wasteful number, since it uses less digits than its factorization.

6886648665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84854 (or 84851 counting only the distinct ones).

The product of its digits is 79626240, while the sum is 63.

The square root of 6886648665 is about 82985.8341224573. The cubic root of 6886648665 is about 1902.5495473071.

The spelling of 6886648665 in words is "six billion, eight hundred eighty-six million, six hundred forty-eight thousand, six hundred sixty-five".