8564987 has 2 divisors, whose sum is σ = 8564988. Its totient is φ = 8564986.

The previous prime is 8564981. The next prime is 8565031. The reversal of 8564987 is 7894658.

8564987 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8564987 - 2¹² = 8560891 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (8564981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4282493 + 4282494.

It is an arithmetic number, because the mean of its divisors is an integer number (4282494).

Almost surely, 2^8564987 is an apocalyptic number.

8564987 is a deficient number, since it is larger than the sum of its proper divisors (1).

8564987 is an equidigital number, since it uses as much as digits as its factorization.

8564987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 47.

The square root of 8564987 is about 2926.5999043258. The cubic root of 8564987 is about 204.6015421020.

The spelling of 8564987 in words is "eight million, five hundred sixty-four thousand, nine hundred eighty-seven".