805855835 has 16 divisors (see below), whose sum is σ = 1018745760. Its totient is φ = 610260480.

The previous prime is 805855823. The next prime is 805855837. The reversal of 805855835 is 538558508.

It is a happy number.

It is not a de Polignac number, because 805855835 - 2²⁶ = 738746971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 805855835.

It is not an unprimeable number, because it can be changed into a prime (805855837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151379 + ... + 156611.

It is an arithmetic number, because the mean of its divisors is an integer number (63671610).

Almost surely, 2^805855835 is an apocalyptic number.

805855835 is a deficient number, since it is larger than the sum of its proper divisors (212889925).

805855835 is a wasteful number, since it uses less digits than its factorization.

805855835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6878.

The product of its (nonzero) digits is 960000, while the sum is 47.

The square root of 805855835 is about 28387.6000218405. The cubic root of 805855835 is about 930.5772940951.

The spelling of 805855835 in words is "eight hundred five million, eight hundred fifty-five thousand, eight hundred thirty-five".