860859 has 6 divisors (see below), whose sum is σ = 1243476. Its totient is φ = 573900.

The previous prime is 860843. The next prime is 860861. The reversal of 860859 is 958068.

It is not a de Polignac number, because 860859 - 2⁴ = 860843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (860809) 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 5 ways as a sum of consecutive naturals, for example, 47817 + ... + 47834.

It is an arithmetic number, because the mean of its divisors is an integer number (207246).

2⁸⁶⁰⁸⁵⁹ is an apocalyptic number.

860859 is a deficient number, since it is larger than the sum of its proper divisors (382617).

860859 is a wasteful number, since it uses less digits than its factorization.

860859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95657 (or 95654 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 860859 is about 927.8248757174. The cubic root of 860859 is about 95.1285056868.

The spelling of 860859 in words is "eight hundred sixty thousand, eight hundred fifty-nine".