563653643 has 16 divisors (see below), whose sum is σ = 652976640. Its totient is φ = 476558016.

The previous prime is 563653631. The next prime is 563653667. The reversal of 563653643 is 346356365.

It is a cyclic number.

It is not a de Polignac number, because 563653643 - 2⁴ = 563653627 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 563653643.

It is not an unprimeable number, because it can be changed into a prime (563653613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349946 + ... + 351552.

It is an arithmetic number, because the mean of its divisors is an integer number (40811040).

Almost surely, 2^563653643 is an apocalyptic number.

563653643 is a deficient number, since it is larger than the sum of its proper divisors (89322997).

563653643 is a wasteful number, since it uses less digits than its factorization.

563653643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266.

The product of its digits is 583200, while the sum is 41.

The square root of 563653643 is about 23741.3909238696. The cubic root of 563653643 is about 826.0457594928.

The spelling of 563653643 in words is "five hundred sixty-three million, six hundred fifty-three thousand, six hundred forty-three".