561489327 has 20 divisors (see below), whose sum is σ = 958592976. Its totient is φ = 320850720.

The previous prime is 561489287. The next prime is 561489347. The reversal of 561489327 is 723984165.

561489327 is a `hidden beast` number, since 5 + 614 + 8 + 9 + 3 + 27 = 666.

It is not a de Polignac number, because 561489327 - 2¹⁰ = 561488303 is a prime.

It is a fibodiv number, since the Fibonacci-like sequence with seeds 56 and 1489327 contains 561489327 itself.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561489347) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 494574 + ... + 495707.

Almost surely, 2^561489327 is an apocalyptic number.

561489327 is a deficient number, since it is larger than the sum of its proper divisors (397103649).

561489327 is an equidigital number, since it uses as much as digits as its factorization.

561489327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990300 (or 990291 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 561489327 is about 23695.7660142060. The cubic root of 561489327 is about 824.9871204601.

The spelling of 561489327 in words is "five hundred sixty-one million, four hundred eighty-nine thousand, three hundred twenty-seven".