768681845 has 8 divisors (see below), whose sum is σ = 947348664. Its totient is φ = 598325184.

The previous prime is 768681829. The next prime is 768681847. The reversal of 768681845 is 548186867.

768681845 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 335292721 + 433389124 = 18311^2 + 20818^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 768681845 - 2⁴ = 768681829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768681847) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2077334 + ... + 2077703.

It is an arithmetic number, because the mean of its divisors is an integer number (118418583).

Almost surely, 2^768681845 is an apocalyptic number.

It is an amenable number.

768681845 is a deficient number, since it is larger than the sum of its proper divisors (178666819).

768681845 is a wasteful number, since it uses less digits than its factorization.

768681845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4155079.

The product of its digits is 2580480, while the sum is 53.

The square root of 768681845 is about 27725.1121729020. The cubic root of 768681845 is about 916.0423269630.

The spelling of 768681845 in words is "seven hundred sixty-eight million, six hundred eighty-one thousand, eight hundred forty-five".