859816 has 16 divisors (see below), whose sum is σ = 1664640. Its totient is φ = 415920.

The previous prime is 859801. The next prime is 859823. The reversal of 859816 is 618958.

859816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

859816 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1486 + ... + 1981.

It is an arithmetic number, because the mean of its divisors is an integer number (104040).

2⁸⁵⁹⁸¹⁶ is an apocalyptic number.

859816 is the 496-th nonagonal number.

It is an amenable number.

859816 is a deficient number, since it is larger than the sum of its proper divisors (804824).

859816 is a wasteful number, since it uses less digits than its factorization.

859816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3504 (or 3500 counting only the distinct ones).

The product of its digits is 17280, while the sum is 37.

The square root of 859816 is about 927.2626380913. The cubic root of 859816 is about 95.0900715456.

The spelling of 859816 in words is "eight hundred fifty-nine thousand, eight hundred sixteen".