561624620 has 24 divisors (see below), whose sum is σ = 1204507584. Its totient is φ = 219869696.

The previous prime is 561624617. The next prime is 561624647. The reversal of 561624620 is 26426165.

561624620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 297797 + ... + 299676.

It is an arithmetic number, because the mean of its divisors is an integer number (50187816).

Almost surely, 2^561624620 is an apocalyptic number.

It is an amenable number.

561624620 is an abundant number, since it is smaller than the sum of its proper divisors (642882964).

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

561624620 is a wasteful number, since it uses less digits than its factorization.

561624620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597529 (or 597527 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 561624620 is about 23698.6206349652. The cubic root of 561624620 is about 825.0533764057.

The spelling of 561624620 in words is "five hundred sixty-one million, six hundred twenty-four thousand, six hundred twenty".