768805285 has 4 divisors (see below), whose sum is σ = 922566348. Its totient is φ = 615044224.

The previous prime is 768805259. The next prime is 768805357. The reversal of 768805285 is 582508867.

It is a happy number.

768805285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 582508867 = 2083 ⋅279649.

It can be written as a sum of positive squares in 2 ways, for example, as 507465729 + 261339556 = 22527^2 + 16166^2 .

It is a cyclic number.

It is not a de Polignac number, because 768805285 - 2⁷ = 768805157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76880524 + ... + 76880533.

It is an arithmetic number, because the mean of its divisors is an integer number (230641587).

Almost surely, 2^768805285 is an apocalyptic number.

It is an amenable number.

768805285 is a deficient number, since it is larger than the sum of its proper divisors (153761063).

768805285 is a wasteful number, since it uses less digits than its factorization.

768805285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153761062.

The product of its (nonzero) digits is 1075200, while the sum is 49.

The square root of 768805285 is about 27727.3382242147. The cubic root of 768805285 is about 916.0913590444.

The spelling of 768805285 in words is "seven hundred sixty-eight million, eight hundred five thousand, two hundred eighty-five".