561696 has 24 divisors (see below), whose sum is σ = 1474704. Its totient is φ = 187200.

The previous prime is 561667. The next prime is 561703. The reversal of 561696 is 696165.

It is a tau number, because it is divible by the number of its divisors (24).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2830 + ... + 3021.

It is an arithmetic number, because the mean of its divisors is an integer number (61446).

2⁵⁶¹⁶⁹⁶ is an apocalyptic number.

It is an amenable number.

561696 is an abundant number, since it is smaller than the sum of its proper divisors (913008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561696 is a wasteful number, since it uses less digits than its factorization.

561696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5864 (or 5856 counting only the distinct ones).

The product of its digits is 9720, while the sum is 33.

The square root of 561696 is about 749.4638083323. The cubic root of 561696 is about 82.5088328467.

The spelling of 561696 in words is "five hundred sixty-one thousand, six hundred ninety-six".