768909 has 8 divisors (see below), whose sum is σ = 1039552. Its totient is φ = 505440.

The previous prime is 768881. The next prime is 768923. The reversal of 768909 is 909867.

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

It is not a de Polignac number, because 768909 - 2⁸ = 768653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768979) 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 7 ways as a sum of consecutive naturals, for example, 1537 + ... + 1974.

It is an arithmetic number, because the mean of its divisors is an integer number (129944).

2⁷⁶⁸⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

768909 is a deficient number, since it is larger than the sum of its proper divisors (270643).

768909 is a wasteful number, since it uses less digits than its factorization.

768909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3587.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 768909 is about 876.8745634354. The cubic root of 768909 is about 91.6132552025.

The spelling of 768909 in words is "seven hundred sixty-eight thousand, nine hundred nine".