8540687 has 4 divisors (see below), whose sum is σ = 8549040. Its totient is φ = 8532336.

The previous prime is 8540683. The next prime is 8540689. The reversal of 8540687 is 7860458.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7860458 = 2 ⋅3930229.

It is not a de Polignac number, because 8540687 - 2² = 8540683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8540687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8540683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2387 + ... + 4772.

It is an arithmetic number, because the mean of its divisors is an integer number (2137260).

Almost surely, 2^8540687 is an apocalyptic number.

8540687 is a deficient number, since it is larger than the sum of its proper divisors (8353).

8540687 is a wasteful number, since it uses less digits than its factorization.

8540687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8352.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 8540687 is about 2922.4453801568. The cubic root of 8540687 is about 204.4078649527.

The spelling of 8540687 in words is "eight million, five hundred forty thousand, six hundred eighty-seven".