8540631 has 12 divisors (see below), whose sum is σ = 13458120. Its totient is φ = 5176080.

The previous prime is 8540629. The next prime is 8540639. The reversal of 8540631 is 1360458.

8540631 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8540631 - 2¹ = 8540629 is a prime.

It is a super-2 number, since 2×8540631² = 145884755756322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8540595 and 8540604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8540639) 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, 43036 + ... + 43233.

It is an arithmetic number, because the mean of its divisors is an integer number (1121510).

Almost surely, 2^8540631 is an apocalyptic number.

8540631 is a deficient number, since it is larger than the sum of its proper divisors (4917489).

8540631 is a wasteful number, since it uses less digits than its factorization.

8540631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86286 (or 86283 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 8540631 is about 2922.4357991237. The cubic root of 8540631 is about 204.4074181945.

The spelling of 8540631 in words is "eight million, five hundred forty thousand, six hundred thirty-one".