8043681 has 8 divisors (see below), whose sum is σ = 10803744. Its totient is φ = 5323040.

The previous prime is 8043653. The next prime is 8043683. The reversal of 8043681 is 1863408.

It is a happy number.

8043681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8043681 - 2⁵ = 8043649 is a prime.

It is a super-2 number, since 2×8043681² = 129401608059522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8043683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9375 + ... + 10196.

It is an arithmetic number, because the mean of its divisors is an integer number (1350468).

Almost surely, 2^8043681 is an apocalyptic number.

It is an amenable number.

8043681 is a deficient number, since it is larger than the sum of its proper divisors (2760063).

8043681 is a wasteful number, since it uses less digits than its factorization.

8043681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19711.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 8043681 is about 2836.1383957769. The cubic root of 8043681 is about 200.3633478254.

The spelling of 8043681 in words is "eight million, forty-three thousand, six hundred eighty-one".