7688643688 has 32 divisors (see below), whose sum is σ = 16410548160. Its totient is φ = 3342887680.

The previous prime is 7688643673. The next prime is 7688643701. The reversal of 7688643688 is 8863468867.

It is a super-2 number, since 2×7688643688² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1897345 + ... + 1901392.

It is an arithmetic number, because the mean of its divisors is an integer number (512829630).

Almost surely, 2^7688643688 is an apocalyptic number.

It is an amenable number.

7688643688 is an abundant number, since it is smaller than the sum of its proper divisors (8721904472).

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

7688643688 is a wasteful number, since it uses less digits than its factorization.

7688643688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3798777 (or 3798773 counting only the distinct ones).

The product of its digits is 74317824, while the sum is 64.

The square root of 7688643688 is about 87684.9114044144. The cubic root of 7688643688 is about 1973.7095613866.

The spelling of 7688643688 in words is "seven billion, six hundred eighty-eight million, six hundred forty-three thousand, six hundred eighty-eight".