768280809 has 12 divisors (see below), whose sum is σ = 1032322928. Its totient is φ = 508243320.

The previous prime is 768280801. The next prime is 768280823. The reversal of 768280809 is 908082867.

It is a happy number.

768280809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 768280809 - 2³ = 768280801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (768280801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44022 + ... + 58944.

Almost surely, 2^768280809 is an apocalyptic number.

It is an amenable number.

768280809 is a deficient number, since it is larger than the sum of its proper divisors (264042119).

768280809 is a wasteful number, since it uses less digits than its factorization.

768280809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15188 (or 15057 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 768280809 is about 27717.8788690621. The cubic root of 768280809 is about 915.8829936580.

The spelling of 768280809 in words is "seven hundred sixty-eight million, two hundred eighty thousand, eight hundred nine".