860591 has 16 divisors (see below), whose sum is σ = 995328. Its totient is φ = 739200.

The previous prime is 860581. The next prime is 860593. The reversal of 860591 is 195068.

It is a cyclic number.

It is not a de Polignac number, because 860591 - 2¹⁰ = 859567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12086 + ... + 12156.

It is an arithmetic number, because the mean of its divisors is an integer number (62208).

2⁸⁶⁰⁵⁹¹ is an apocalyptic number.

860591 is a deficient number, since it is larger than the sum of its proper divisors (134737).

860591 is a wasteful number, since it uses less digits than its factorization.

860591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 860591 is about 927.6804406691. The cubic root of 860591 is about 95.1186329567.

The spelling of 860591 in words is "eight hundred sixty thousand, five hundred ninety-one".