561106860 has 96 divisors (see below), whose sum is σ = 1666156800. Its totient is φ = 140693760.

The previous prime is 561106859. The next prime is 561106867. The reversal of 561106860 is 68601165.

It is not an unprimeable number, because it can be changed into a prime (561106867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156690 + ... + 160230.

It is an arithmetic number, because the mean of its divisors is an integer number (17355800).

Almost surely, 2^561106860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561106860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833078400).

561106860 is an abundant number, since it is smaller than the sum of its proper divisors (1105049940).

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

561106860 is a wasteful number, since it uses less digits than its factorization.

561106860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3711 (or 3709 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 561106860 is about 23687.6942736097. The cubic root of 561106860 is about 824.7997604019.

The spelling of 561106860 in words is "five hundred sixty-one million, one hundred six thousand, eight hundred sixty".