864587 has 2 divisors, whose sum is σ = 864588. Its totient is φ = 864586.

The previous prime is 864583. The next prime is 864613. The reversal of 864587 is 785468.

864587 is digitally balanced in base 2, because in such base 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 864587 - 2² = 864583 is a prime.

It is a super-3 number, since 3×864587³ = 1938864050343330009, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 864587.

It is not a weakly prime, because it can be changed into another prime (864581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432293 + 432294.

It is an arithmetic number, because the mean of its divisors is an integer number (432294).

2⁸⁶⁴⁵⁸⁷ is an apocalyptic number.

864587 is a deficient number, since it is larger than the sum of its proper divisors (1).

864587 is an equidigital number, since it uses as much as digits as its factorization.

864587 is an evil number, because the sum of its binary digits is even.

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

The square root of 864587 is about 929.8317052026. The cubic root of 864587 is about 95.2656277819.

The spelling of 864587 in words is "eight hundred sixty-four thousand, five hundred eighty-seven".