561073880 has 32 divisors (see below), whose sum is σ = 1265196240. Its totient is φ = 223935360.

The previous prime is 561073861. The next prime is 561073897. The reversal of 561073880 is 88370165.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 3227 + ... + 33653.

Almost surely, 2^561073880 is an apocalyptic number.

It is an amenable number.

561073880 is an abundant number, since it is smaller than the sum of its proper divisors (704122360).

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

561073880 is a wasteful number, since it uses less digits than its factorization.

561073880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30899 (or 30895 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 561073880 is about 23686.9981213323. The cubic root of 561073880 is about 824.7836004206.

The spelling of 561073880 in words is "five hundred sixty-one million, seventy-three thousand, eight hundred eighty".