8587491 has 24 divisors (see below), whose sum is σ = 12914832. Its totient is φ = 5068800.

The previous prime is 8587471. The next prime is 8587493. The reversal of 8587491 is 1947858.

It is not a de Polignac number, because 8587491 - 2⁵ = 8587459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8587493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14595 + ... + 15171.

It is an arithmetic number, because the mean of its divisors is an integer number (538118).

Almost surely, 2^8587491 is an apocalyptic number.

8587491 is a deficient number, since it is larger than the sum of its proper divisors (4327341).

8587491 is a wasteful number, since it uses less digits than its factorization.

8587491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 632 counting only the distinct ones).

The product of its digits is 80640, while the sum is 42.

The square root of 8587491 is about 2930.4421168145. The cubic root of 8587491 is about 204.7805782338.

The spelling of 8587491 in words is "eight million, five hundred eighty-seven thousand, four hundred ninety-one".