768821718 has 16 divisors (see below), whose sum is σ = 1757306880. Its totient is φ = 219663336.

The previous prime is 768821707. The next prime is 768821747. The reversal of 768821718 is 817128867.

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 7 ways as a sum of consecutive naturals, for example, 9152598 + ... + 9152681.

It is an arithmetic number, because the mean of its divisors is an integer number (109831680).

Almost surely, 2^768821718 is an apocalyptic number.

768821718 is an abundant number, since it is smaller than the sum of its proper divisors (988485162).

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

768821718 is a wasteful number, since it uses less digits than its factorization.

768821718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18305291.

The product of its digits is 301056, while the sum is 48.

The square root of 768821718 is about 27727.6345547182. The cubic root of 768821718 is about 916.0978860643.

The spelling of 768821718 in words is "seven hundred sixty-eight million, eight hundred twenty-one thousand, seven hundred eighteen".