8103681 has 6 divisors (see below), whose sum is σ = 11705330. Its totient is φ = 5402448.

The previous prime is 8103661. The next prime is 8103721. The reversal of 8103681 is 1863018.

8103681 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8071281 + 32400 = 2841^2 + 180^2 .

It is not a de Polignac number, because 8103681 - 2⁷ = 8103553 is a prime.

It is a super-2 number, since 2×8103681² = 131339291499522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8103631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 450196 + ... + 450213.

Almost surely, 2^8103681 is an apocalyptic number.

It is an amenable number.

8103681 is a deficient number, since it is larger than the sum of its proper divisors (3601649).

8103681 is a wasteful number, since it uses less digits than its factorization.

8103681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900415 (or 900412 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 8103681 is about 2846.6965064790. The cubic root of 8103681 is about 200.8603024260.

Adding to 8103681 its reverse (1863018), we get a palindrome (9966699).

The spelling of 8103681 in words is "eight million, one hundred three thousand, six hundred eighty-one".