561419689 has 4 divisors (see below), whose sum is σ = 562269700. Its totient is φ = 560569680.

The previous prime is 561419681. The next prime is 561419699. The reversal of 561419689 is 986914165.

561419689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 388760089 + 172659600 = 19717^2 + 13140^2 .

It is a cyclic number.

It is not a de Polignac number, because 561419689 - 2³ = 561419681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561419681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424014 + ... + 425335.

It is an arithmetic number, because the mean of its divisors is an integer number (140567425).

Almost surely, 2^561419689 is an apocalyptic number.

It is an amenable number.

561419689 is a deficient number, since it is larger than the sum of its proper divisors (850011).

561419689 is an equidigital number, since it uses as much as digits as its factorization.

561419689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850010.

The product of its digits is 466560, while the sum is 49.

The square root of 561419689 is about 23694.2965500139. The cubic root of 561419689 is about 824.9530130571.

The spelling of 561419689 in words is "five hundred sixty-one million, four hundred nineteen thousand, six hundred eighty-nine".