805684863 has 4 divisors (see below), whose sum is σ = 1074246488. Its totient is φ = 537123240.

The previous prime is 805684861. The next prime is 805684877. The reversal of 805684863 is 368486508.

805684863 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.

It is not a de Polignac number, because 805684863 - 2¹ = 805684861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805684861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134280808 + ... + 134280813.

It is an arithmetic number, because the mean of its divisors is an integer number (268561622).

Almost surely, 2^805684863 is an apocalyptic number.

805684863 is a deficient number, since it is larger than the sum of its proper divisors (268561625).

805684863 is a wasteful number, since it uses less digits than its factorization.

805684863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268561624.

The product of its (nonzero) digits is 1105920, while the sum is 48.

The square root of 805684863 is about 28384.5884768478. The cubic root of 805684863 is about 930.5114783882.

The spelling of 805684863 in words is "eight hundred five million, six hundred eighty-four thousand, eight hundred sixty-three".