559681 has 4 divisors (see below), whose sum is σ = 561600. Its totient is φ = 557764.

The previous prime is 559679. The next prime is 559687. The reversal of 559681 is 186955.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 559681 - 2¹ = 559679 is a prime.

It is a super-2 number, since 2×559681² = 626485643522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (559687) 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, 421 + ... + 1138.

It is an arithmetic number, because the mean of its divisors is an integer number (140400).

2⁵⁵⁹⁶⁸¹ is an apocalyptic number.

It is an amenable number.

559681 is a deficient number, since it is larger than the sum of its proper divisors (1919).

559681 is a wasteful number, since it uses less digits than its factorization.

559681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918.

The product of its digits is 10800, while the sum is 34.

The square root of 559681 is about 748.1183061522. The cubic root of 559681 is about 82.4100519518.

The spelling of 559681 in words is "five hundred fifty-nine thousand, six hundred eighty-one".