561830580 has 72 divisors (see below), whose sum is σ = 1767353952. Its totient is φ = 149820192.

The previous prime is 561830537. The next prime is 561830611. The reversal of 561830580 is 85038165.

561830580 is a `hidden beast` number, since 5 + 618 + 30 + 5 + 8 + 0 = 666.

It is a super-3 number, since 3×561830580³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52942 + ... + 62661.

Almost surely, 2^561830580 is an apocalyptic number.

It is an amenable number.

561830580 is an abundant number, since it is smaller than the sum of its proper divisors (1205523372).

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

561830580 is a wasteful number, since it uses less digits than its factorization.

561830580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115627 (or 115613 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 561830580 is about 23702.9656372362. The cubic root of 561830580 is about 825.1542191036.

The spelling of 561830580 in words is "five hundred sixty-one million, eight hundred thirty thousand, five hundred eighty".