7738768686 has 24 divisors (see below), whose sum is σ = 17012501352. Its totient is φ = 2345081200.

The previous prime is 7738768651. The next prime is 7738768693. The reversal of 7738768686 is 6868678377.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5329005 + ... + 5330456.

It is an arithmetic number, because the mean of its divisors is an integer number (708854223).

Almost surely, 2^7738768686 is an apocalyptic number.

7738768686 is an abundant number, since it is smaller than the sum of its proper divisors (9273732666).

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

7738768686 is a wasteful number, since it uses less digits than its factorization.

7738768686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10659488 (or 10659477 counting only the distinct ones).

The product of its digits is 113799168, while the sum is 66.

The square root of 7738768686 is about 87970.2716035366. The cubic root of 7738768686 is about 1977.9893787281.

The spelling of 7738768686 in words is "seven billion, seven hundred thirty-eight million, seven hundred sixty-eight thousand, six hundred eighty-six".