561784804 has 27 divisors (see below), whose sum is σ = 1144309257. Its totient is φ = 240622704.

The previous prime is 561784777. The next prime is 561784819. The reversal of 561784804 is 408487165.

The square root of 561784804 is 23702.

It is a perfect power (a square), and thus also a powerful number.

561784804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 214036900 + 347747904 = 14630^2 + 18648^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 330982 + ... + 332674.

Almost surely, 2^561784804 is an apocalyptic number.

561784804 is the 23702-nd square number.

It is an amenable number.

561784804 is an abundant number, since it is smaller than the sum of its proper divisors (582524453).

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

561784804 is an equidigital number, since it uses as much as digits as its factorization.

561784804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404 (or 1702 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The cubic root of 561784804 is about 825.1318082637.

The spelling of 561784804 in words is "five hundred sixty-one million, seven hundred eighty-four thousand, eight hundred four".