7686881688 has 32 divisors (see below), whose sum is σ = 19314765360. Its totient is φ = 2549285760.

The previous prime is 7686881603. The next prime is 7686881707. The reversal of 7686881688 is 8861886867.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 808183 + ... + 817638.

Almost surely, 2^7686881688 is an apocalyptic number.

It is an amenable number.

7686881688 is an abundant number, since it is smaller than the sum of its proper divisors (11627883672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7686881688 is a wasteful number, since it uses less digits than its factorization.

7686881688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626027 (or 1626023 counting only the distinct ones).

The product of its digits is 49545216, while the sum is 66.

The square root of 7686881688 is about 87674.8634900563. The cubic root of 7686881688 is about 1973.5587787483.

The spelling of 7686881688 in words is "seven billion, six hundred eighty-six million, eight hundred eighty-one thousand, six hundred eighty-eight".