564553643 has 8 divisors (see below), whose sum is σ = 588226800. Its totient is φ = 541160928.

The previous prime is 564553637. The next prime is 564553651. The reversal of 564553643 is 346355465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-564553643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 564553643.

It is not an unprimeable number, because it can be changed into a prime (564553673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65996 + ... + 74057.

It is an arithmetic number, because the mean of its divisors is an integer number (73528350).

Almost surely, 2^564553643 is an apocalyptic number.

564553643 is a deficient number, since it is larger than the sum of its proper divisors (23673157).

564553643 is a wasteful number, since it uses less digits than its factorization.

564553643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140221.

The product of its digits is 648000, while the sum is 41.

The square root of 564553643 is about 23760.3376028204. The cubic root of 564553643 is about 826.4851817355.

The spelling of 564553643 in words is "five hundred sixty-four million, five hundred fifty-three thousand, six hundred forty-three".