561189693 has 16 divisors (see below), whose sum is σ = 778215680. Its totient is φ = 359401536.

The previous prime is 561189679. The next prime is 561189743. The reversal of 561189693 is 396981165.

561189693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 561189693 - 2⁸ = 561189437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561189613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23230 + ... + 40767.

It is an arithmetic number, because the mean of its divisors is an integer number (48638480).

Almost surely, 2^561189693 is an apocalyptic number.

It is an amenable number.

561189693 is a deficient number, since it is larger than the sum of its proper divisors (217025987).

561189693 is a wasteful number, since it uses less digits than its factorization.

561189693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64116.

The product of its digits is 349920, while the sum is 48.

The square root of 561189693 is about 23689.4426485724. The cubic root of 561189693 is about 824.8403452303.

The spelling of 561189693 in words is "five hundred sixty-one million, one hundred eighty-nine thousand, six hundred ninety-three".