862859 has 4 divisors (see below), whose sum is σ = 868800. Its totient is φ = 856920.

The previous prime is 862819. The next prime is 862861. The reversal of 862859 is 958268.

862859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 862859 - 2¹² = 858763 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (862819) 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, 2747 + ... + 3044.

It is an arithmetic number, because the mean of its divisors is an integer number (217200).

2⁸⁶²⁸⁵⁹ is an apocalyptic number.

862859 is a deficient number, since it is larger than the sum of its proper divisors (5941).

862859 is a wasteful number, since it uses less digits than its factorization.

862859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5940.

The product of its digits is 34560, while the sum is 38.

The square root of 862859 is about 928.9020400451. The cubic root of 862859 is about 95.2021181531.

The spelling of 862859 in words is "eight hundred sixty-two thousand, eight hundred fifty-nine".