561474784 has 72 divisors (see below), whose sum is σ = 1222996320. Its totient is φ = 253628544.

The previous prime is 561474773. The next prime is 561474799. The reversal of 561474784 is 487474165.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

561474784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11946249 + ... + 11946295.

It is an arithmetic number, because the mean of its divisors is an integer number (16986060).

Almost surely, 2^561474784 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 561474784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (611498160).

561474784 is an abundant number, since it is smaller than the sum of its proper divisors (661521536).

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

561474784 is an frugal number, since it uses more digits than its factorization.

561474784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 62 counting only the distinct ones).

The product of its digits is 752640, while the sum is 46.

The square root of 561474784 is about 23695.4591430510. The cubic root of 561474784 is about 824.9799978009.

The spelling of 561474784 in words is "five hundred sixty-one million, four hundred seventy-four thousand, seven hundred eighty-four".