561310864 has 15 divisors (see below), whose sum is σ = 1087723443.
Its totient is φ = 280608048.
The previous prime is 561310819. The next prime is 561310909. The reversal of 561310864 is 468013165.
It is a happy number.
The square root of 561310864 is 23692.
It is a perfect power (a square), and thus also a powerful number.
It is an interprime number because it is at equal distance from previous prime (561310819) and next prime (561310909).
It is a Duffinian number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 91807 + ... + 97729.
Almost surely, 2561310864 is an apocalyptic number.
561310864 is the 23692-nd square number.
It is an amenable number.
561310864 is a deficient number, since it is larger than the sum of its proper divisors (526412579).
561310864 is an frugal number, since it uses more digits than its factorization.
561310864 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11854 (or 5925 counting only the distinct ones).
The product of its (nonzero) digits is 17280, while the sum is 34.
The cubic root of 561310864 is about 824.8997069388.
The spelling of 561310864 in words is "five hundred sixty-one million, three hundred ten thousand, eight hundred sixty-four".