561683 has 4 divisors (see below), whose sum is σ = 586128. Its totient is φ = 537240.

The previous prime is 561667. The next prime is 561703. The reversal of 561683 is 386165.

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

It is a cyclic number.

It is not a de Polignac number, because 561683 - 2⁴ = 561667 is a prime.

It is a Duffinian number.

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

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12188 + ... + 12233.

It is an arithmetic number, because the mean of its divisors is an integer number (146532).

2⁵⁶¹⁶⁸³ is an apocalyptic number.

561683 is a deficient number, since it is larger than the sum of its proper divisors (24445).

561683 is a wasteful number, since it uses less digits than its factorization.

561683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24444.

The product of its digits is 4320, while the sum is 29.

The square root of 561683 is about 749.4551354151. The cubic root of 561683 is about 82.5081963084.

The spelling of 561683 in words is "five hundred sixty-one thousand, six hundred eighty-three".