561646422 has 48 divisors (see below), whose sum is σ = 1325142000. Its totient is φ = 171243072.

The previous prime is 561646399. The next prime is 561646447. The reversal of 561646422 is 224646165.

561646422 is a `hidden beast` number, since 5 + 6 + 1 + 6 + 4 + 642 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18397 + ... + 38232.

It is an arithmetic number, because the mean of its divisors is an integer number (27607125).

Almost surely, 2^561646422 is an apocalyptic number.

561646422 is an abundant number, since it is smaller than the sum of its proper divisors (763495578).

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

561646422 is a wasteful number, since it uses less digits than its factorization.

561646422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56685 (or 56682 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 561646422 is about 23699.0806150787. The cubic root of 561646422 is about 825.0640523272.

The spelling of 561646422 in words is "five hundred sixty-one million, six hundred forty-six thousand, four hundred twenty-two".