768691 has 16 divisors (see below), whose sum is σ = 979200. Its totient is φ = 586080.

The previous prime is 768671. The next prime is 768727. The reversal of 768691 is 196867.

It is not a de Polignac number, because 768691 - 2⁷ = 768563 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 768691.

It is not an unprimeable number, because it can be changed into a prime (768631) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5085 + ... + 5233.

It is an arithmetic number, because the mean of its divisors is an integer number (61200).

2⁷⁶⁸⁶⁹¹ is an apocalyptic number.

768691 is the 469-th nonagonal number.

768691 is a deficient number, since it is larger than the sum of its proper divisors (210509).

768691 is a wasteful number, since it uses less digits than its factorization.

768691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234.

The product of its digits is 18144, while the sum is 37.

The square root of 768691 is about 876.7502495010. The cubic root of 768691 is about 91.6045963636.

It can be divided in two parts, 7686 and 91, that added together give a palindrome (7777).

The spelling of 768691 in words is "seven hundred sixty-eight thousand, six hundred ninety-one".