768689 has 8 divisors (see below), whose sum is σ = 823680. Its totient is φ = 714816.

The previous prime is 768671. The next prime is 768727. The reversal of 768689 is 986867.

768689 = T₆₇ + T₆₈ + ... + T₁₆₉.

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

It is not a de Polignac number, because 768689 - 2¹² = 764593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (768629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1532 + ... + 1970.

It is an arithmetic number, because the mean of its divisors is an integer number (102960).

2⁷⁶⁸⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

768689 is a deficient number, since it is larger than the sum of its proper divisors (54991).

768689 is a wasteful number, since it uses less digits than its factorization.

768689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559.

The product of its digits is 145152, while the sum is 44.

The square root of 768689 is about 876.7491089246. The cubic root of 768689 is about 91.6045169172.

The spelling of 768689 in words is "seven hundred sixty-eight thousand, six hundred eighty-nine".