805855836 has 24 divisors (see below), whose sum is σ = 1893861760. Its totient is φ = 266685552.

The previous prime is 805855823. The next prime is 805855837. The reversal of 805855836 is 638558508.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239896 + ... + 243231.

Almost surely, 2^805855836 is an apocalyptic number.

It is an amenable number.

805855836 is an abundant number, since it is smaller than the sum of its proper divisors (1088005924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

805855836 is a wasteful number, since it uses less digits than its factorization.

805855836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483273 (or 483271 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 48.

The square root of 805855836 is about 28387.6000394538. The cubic root of 805855836 is about 930.5772944800.

The spelling of 805855836 in words is "eight hundred five million, eight hundred fifty-five thousand, eight hundred thirty-six".