860005 has 4 divisors (see below), whose sum is σ = 1032012. Its totient is φ = 688000.

The previous prime is 859987. The next prime is 860009. The reversal of 860005 is 500068.

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

It can be written as a sum of positive squares in 2 ways, for example, as 332929 + 527076 = 577^2 + 726^2 .

It is not a de Polignac number, because 860005 - 2⁵ = 859973 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860009) 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, 85996 + ... + 86005.

It is an arithmetic number, because the mean of its divisors is an integer number (258003).

2⁸⁶⁰⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

860005 is a deficient number, since it is larger than the sum of its proper divisors (172007).

860005 is a wasteful number, since it uses less digits than its factorization.

860005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172006.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 860005 is about 927.3645453650. The cubic root of 860005 is about 95.0970384265.

The spelling of 860005 in words is "eight hundred sixty thousand, five".