859856 has 20 divisors (see below), whose sum is σ = 1695204. Its totient is φ = 422400.

The previous prime is 859853. The next prime is 859861. The reversal of 859856 is 658958.

859856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 78400 + 781456 = 280^2 + 884^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536 + ... + 1416.

2⁸⁵⁹⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

859856 is a deficient number, since it is larger than the sum of its proper divisors (835348).

859856 is a wasteful number, since it uses less digits than its factorization.

859856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950 (or 944 counting only the distinct ones).

The product of its digits is 86400, while the sum is 41.

The square root of 859856 is about 927.2842067026. The cubic root of 859856 is about 95.0915461029.

The spelling of 859856 in words is "eight hundred fifty-nine thousand, eight hundred fifty-six".