561727789 has 8 divisors (see below), whose sum is σ = 651017088. Its totient is φ = 474699120.

The previous prime is 561727783. The next prime is 561727801. The reversal of 561727789 is 987727165.

561727789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 561727789 - 2¹⁹ = 561203501 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 (561727783) 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, 564622 + ... + 565615.

It is an arithmetic number, because the mean of its divisors is an integer number (81377136).

Almost surely, 2^561727789 is an apocalyptic number.

It is an amenable number.

561727789 is a deficient number, since it is larger than the sum of its proper divisors (89289299).

561727789 is a wasteful number, since it uses less digits than its factorization.

561727789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130315.

The product of its digits is 1481760, while the sum is 52.

The square root of 561727789 is about 23700.7972228784. The cubic root of 561727789 is about 825.1038933745.

The spelling of 561727789 in words is "five hundred sixty-one million, seven hundred twenty-seven thousand, seven hundred eighty-nine".