561622789 has 8 divisors (see below), whose sum is σ = 691228160. Its totient is φ = 444360816.

The previous prime is 561622783. The next prime is 561622811. The reversal of 561622789 is 987226165.

561622789 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 a cyclic number.

It is not a de Polignac number, because 561622789 - 2³ = 561622781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561622781) 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, 3085749 + ... + 3085930.

It is an arithmetic number, because the mean of its divisors is an integer number (86403520).

Almost surely, 2^561622789 is an apocalyptic number.

It is an amenable number.

561622789 is a deficient number, since it is larger than the sum of its proper divisors (129605371).

561622789 is a wasteful number, since it uses less digits than its factorization.

561622789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6171699.

The product of its digits is 362880, while the sum is 46.

The square root of 561622789 is about 23698.5820039934. The cubic root of 561622789 is about 825.0524797960.

The spelling of 561622789 in words is "five hundred sixty-one million, six hundred twenty-two thousand, seven hundred eighty-nine".