561606492 has 48 divisors (see below), whose sum is σ = 1389249792. Its totient is φ = 175968000.

The previous prime is 561606491. The next prime is 561606511. The reversal of 561606492 is 294606165.

It is a self number, because there is not a number n which added to its sum of digits gives 561606492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561606491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248367 + ... + 250617.

It is an arithmetic number, because the mean of its divisors is an integer number (28942704).

Almost surely, 2^561606492 is an apocalyptic number.

It is an amenable number.

561606492 is an abundant number, since it is smaller than the sum of its proper divisors (827643300).

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

561606492 is a wasteful number, since it uses less digits than its factorization.

561606492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3498 (or 3496 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 561606492 is about 23698.2381623614. The cubic root of 561606492 is about 825.0444993444.

The spelling of 561606492 in words is "five hundred sixty-one million, six hundred six thousand, four hundred ninety-two".