561693 has 8 divisors (see below), whose sum is σ = 817056. Its totient is φ = 340400.

The previous prime is 561667. The next prime is 561703. The reversal of 561693 is 396165.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 561693 - 2⁹ = 561181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 561693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (562693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8478 + ... + 8543.

It is an arithmetic number, because the mean of its divisors is an integer number (102132).

2⁵⁶¹⁶⁹³ is an apocalyptic number.

It is an amenable number.

561693 is a deficient number, since it is larger than the sum of its proper divisors (255363).

561693 is a wasteful number, since it uses less digits than its factorization.

561693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17035.

The product of its digits is 4860, while the sum is 30.

The square root of 561693 is about 749.4618068988. The cubic root of 561693 is about 82.5086859542.

The spelling of 561693 in words is "five hundred sixty-one thousand, six hundred ninety-three".