806636481 has 12 divisors (see below), whose sum is σ = 1251109872. Its totient is φ = 460935048.

The previous prime is 806636449. The next prime is 806636497. The reversal of 806636481 is 184636608.

It is a happy number.

It is not a de Polignac number, because 806636481 - 2⁵ = 806636449 is a prime.

It is a super-2 number, since 2×806636481² = 1301324824960126722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (806636401) 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 11 ways as a sum of consecutive naturals, for example, 2743515 + ... + 2743808.

It is an arithmetic number, because the mean of its divisors is an integer number (104259156).

Almost surely, 2^806636481 is an apocalyptic number.

It is an amenable number.

806636481 is a deficient number, since it is larger than the sum of its proper divisors (444473391).

806636481 is a wasteful number, since it uses less digits than its factorization.

806636481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5487340 (or 5487333 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 806636481 is about 28401.3464645604. The cubic root of 806636481 is about 930.8776857043.

The spelling of 806636481 in words is "eight hundred six million, six hundred thirty-six thousand, four hundred eighty-one".