561940886 has 12 divisors (see below), whose sum is σ = 912738852. Its totient is φ = 259357176.

The previous prime is 561940879. The next prime is 561940969. The reversal of 561940886 is 688049165.

561940886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 561940886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 830936 + ... + 831611.

It is an arithmetic number, because the mean of its divisors is an integer number (76061571).

Almost surely, 2^561940886 is an apocalyptic number.

561940886 is a deficient number, since it is larger than the sum of its proper divisors (350797966).

561940886 is a wasteful number, since it uses less digits than its factorization.

561940886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662575 (or 1662562 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 561940886 is about 23705.2923626772. The cubic root of 561940886 is about 825.2082172948.

The spelling of 561940886 in words is "five hundred sixty-one million, nine hundred forty thousand, eight hundred eighty-six".