860259 has 4 divisors (see below), whose sum is σ = 1147016. Its totient is φ = 573504.

The previous prime is 860257. The next prime is 860267. The reversal of 860259 is 952068.

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

It is not a de Polignac number, because 860259 - 2¹ = 860257 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (860257) 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, 143374 + ... + 143379.

It is an arithmetic number, because the mean of its divisors is an integer number (286754).

2⁸⁶⁰²⁵⁹ is an apocalyptic number.

860259 is a deficient number, since it is larger than the sum of its proper divisors (286757).

860259 is a wasteful number, since it uses less digits than its factorization.

860259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286756.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 860259 is about 927.5014824786. The cubic root of 860259 is about 95.1063997170.

Subtracting 860259 from its reverse (952068), we obtain a square (91809 = 303²).

The spelling of 860259 in words is "eight hundred sixty thousand, two hundred fifty-nine".