561783104 has 28 divisors (see below), whose sum is σ = 1138513344. Its totient is φ = 274913664.

The previous prime is 561783077. The next prime is 561783113. The reversal of 561783104 is 401387165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90374 + ... + 96389.

Almost surely, 2^561783104 is an apocalyptic number.

It is an amenable number.

561783104 is an abundant number, since it is smaller than the sum of its proper divisors (576730240).

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

561783104 is a wasteful number, since it uses less digits than its factorization.

561783104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186822 (or 186812 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 561783104 is about 23701.9641380203. The cubic root of 561783104 is about 825.1309759608.

The spelling of 561783104 in words is "five hundred sixty-one million, seven hundred eighty-three thousand, one hundred four".