580861 has 6 divisors (see below), whose sum is σ = 594330. Its totient is φ = 567648.

The previous prime is 580859. The next prime is 580871. The reversal of 580861 is 168085.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 164836 + 416025 = 406^2 + 645^2 .

It is not a de Polignac number, because 580861 - 2¹ = 580859 is a prime.

It is an Ulam number.

It is a Duffinian number.

580861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (580871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5275 + ... + 5383.

It is an arithmetic number, because the mean of its divisors is an integer number (99055).

2⁵⁸⁰⁸⁶¹ is an apocalyptic number.

It is an amenable number.

580861 is a deficient number, since it is larger than the sum of its proper divisors (13469).

580861 is an equidigital number, since it uses as much as digits as its factorization.

580861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 580861 is about 762.1423751505. The cubic root of 580861 is about 83.4367551496.

It can be divided in two parts, 580 and 861, that added together give a palindrome (1441).

The spelling of 580861 in words is "five hundred eighty thousand, eight hundred sixty-one".