8505687 has 8 divisors (see below), whose sum is σ = 11706880. Its totient is φ = 5487480.

The previous prime is 8505667. The next prime is 8505691. The reversal of 8505687 is 7865058.

It is a happy number.

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

It is not a de Polignac number, because 8505687 - 2²⁰ = 7457111 is a prime.

It is a super-2 number, since 2×8505687² = 144693422683938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8505647) 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 7 ways as a sum of consecutive naturals, for example, 45637 + ... + 45822.

It is an arithmetic number, because the mean of its divisors is an integer number (1463360).

Almost surely, 2^8505687 is an apocalyptic number.

8505687 is a deficient number, since it is larger than the sum of its proper divisors (3201193).

8505687 is a wasteful number, since it uses less digits than its factorization.

8505687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91493.

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 8505687 is about 2916.4510967956. The cubic root of 8505687 is about 204.1282594050.

The spelling of 8505687 in words is "eight million, five hundred five thousand, six hundred eighty-seven".