561106672 has 20 divisors (see below), whose sum is σ = 1242450736. Its totient is φ = 240474240.

The previous prime is 561106669. The next prime is 561106673. The reversal of 561106672 is 276601165.

It is a happy number.

561106672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561106673) 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, 2504829 + ... + 2505052.

Almost surely, 2^561106672 is an apocalyptic number.

It is an amenable number.

561106672 is an abundant number, since it is smaller than the sum of its proper divisors (681344064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561106672 is a wasteful number, since it uses less digits than its factorization.

561106672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5009896 (or 5009890 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 561106672 is about 23687.6903053041. The cubic root of 561106672 is about 824.7996682850.

The spelling of 561106672 in words is "five hundred sixty-one million, one hundred six thousand, six hundred seventy-two".