561086 has 12 divisors (see below), whose sum is σ = 866688. Its totient is φ = 272412.

The previous prime is 561083. The next prime is 561091. The reversal of 561086 is 680165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561083) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4355 + ... + 4481.

It is an arithmetic number, because the mean of its divisors is an integer number (72224).

2⁵⁶¹⁰⁸⁶ is an apocalyptic number.

561086 is a deficient number, since it is larger than the sum of its proper divisors (305602).

561086 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 13 representation: 561086 = (168506)₁₃.

561086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 561086 is about 749.0567401739. The cubic root of 561086 is about 82.4789539214.

The spelling of 561086 in words is "five hundred sixty-one thousand, eighty-six".