564243079 has 4 divisors (see below), whose sum is σ = 564926184. Its totient is φ = 563559976.

The previous prime is 564243041. The next prime is 564243089. The reversal of 564243079 is 970342465.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a 3-Lehmer number, since φ(564243079) divides (564243079-1)³.

It is a cyclic number.

It is not a de Polignac number, because 564243079 - 2⁷ = 564242951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564243089) by changing a digit.

It is a nontrivial repunit in base 826.

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 3 ways as a sum of consecutive naturals, for example, 340312 + ... + 341965.

It is an arithmetic number, because the mean of its divisors is an integer number (141231546).

Almost surely, 2^564243079 is an apocalyptic number.

564243079 is a deficient number, since it is larger than the sum of its proper divisors (683105).

564243079 is an equidigital number, since it uses as much as digits as its factorization.

564243079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683104.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 564243079 is about 23753.8013589404. The cubic root of 564243079 is about 826.3336026205. Note that the first 3 decimals are identical.

The spelling of 564243079 in words is "five hundred sixty-four million, two hundred forty-three thousand, seventy-nine".