561813060 has 96 divisors (see below), whose sum is σ = 1632863232. Its totient is φ = 144224640.

The previous prime is 561813047. The next prime is 561813089. The reversal of 561813060 is 60318165.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181647 + ... + 184713.

It is an arithmetic number, because the mean of its divisors is an integer number (17008992).

Almost surely, 2^561813060 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 561813060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (816431616).

561813060 is an abundant number, since it is smaller than the sum of its proper divisors (1071050172).

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

561813060 is a wasteful number, since it uses less digits than its factorization.

561813060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193 (or 3191 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 561813060 is about 23702.5960603475. The cubic root of 561813060 is about 825.1456418725.

The spelling of 561813060 in words is "five hundred sixty-one million, eight hundred thirteen thousand, sixty".