561427812 has 36 divisors (see below), whose sum is σ = 1548180816. Its totient is φ = 170129520.

The previous prime is 561427777. The next prime is 561427813. The reversal of 561427812 is 218724165.

561427812 is a `hidden beast` number, since 5 + 614 + 27 + 8 + 12 = 666.

561427812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (561427813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 708478 + ... + 709269.

Almost surely, 2^561427812 is an apocalyptic number.

It is an amenable number.

561427812 is an abundant number, since it is smaller than the sum of its proper divisors (986753004).

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

561427812 is a wasteful number, since it uses less digits than its factorization.

561427812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417768 (or 1417763 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 561427812 is about 23694.4679619526. The cubic root of 561427812 is about 824.9569916974.

The spelling of 561427812 in words is "five hundred sixty-one million, four hundred twenty-seven thousand, eight hundred twelve".