561964808 has 32 divisors (see below), whose sum is σ = 1067175000. Its totient is φ = 277401600.

The previous prime is 561964751. The next prime is 561964811. The reversal of 561964808 is 808469165.

561964808 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 4 ways, for example, as 553096324 + 8868484 = 23518^2 + 2978^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362018 + ... + 363566.

Almost surely, 2^561964808 is an apocalyptic number.

It is an amenable number.

561964808 is a deficient number, since it is larger than the sum of its proper divisors (505210192).

561964808 is a wasteful number, since it uses less digits than its factorization.

561964808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105 (or 2101 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 561964808 is about 23705.7969281777. The cubic root of 561964808 is about 825.2199269196.

The spelling of 561964808 in words is "five hundred sixty-one million, nine hundred sixty-four thousand, eight hundred eight".