564835109 has 4 divisors (see below), whose sum is σ = 565814604. Its totient is φ = 563855616.

The previous prime is 564835079. The next prime is 564835111. The reversal of 564835109 is 901538465.

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

It can be written as a sum of positive squares in 2 ways, for example, as 461304484 + 103530625 = 21478^2 + 10175^2 .

It is a cyclic number.

It is not a de Polignac number, because 564835109 - 2²⁰ = 563786533 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 (564825109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488882 + ... + 490035.

It is an arithmetic number, because the mean of its divisors is an integer number (141453651).

Almost surely, 2^564835109 is an apocalyptic number.

It is an amenable number.

564835109 is a deficient number, since it is larger than the sum of its proper divisors (979495).

564835109 is an equidigital number, since it uses as much as digits as its factorization.

564835109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979494.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 564835109 is about 23766.2598866544. The cubic root of 564835109 is about 826.6225107752.

The spelling of 564835109 in words is "five hundred sixty-four million, eight hundred thirty-five thousand, one hundred nine".