573553663 has 4 divisors (see below), whose sum is σ = 573681328. Its totient is φ = 573426000.

The previous prime is 573553637. The next prime is 573553679. The reversal of 573553663 is 366355375.

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

It is a cyclic number.

It is not a de Polignac number, because 573553663 - 2⁹ = 573553151 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 (573553363) 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, 56838 + ... + 66163.

It is an arithmetic number, because the mean of its divisors is an integer number (143420332).

Almost surely, 2^573553663 is an apocalyptic number.

573553663 is a deficient number, since it is larger than the sum of its proper divisors (127665).

573553663 is a wasteful number, since it uses less digits than its factorization.

573553663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127664.

The product of its digits is 850500, while the sum is 43.

The square root of 573553663 is about 23948.9804167109. The cubic root of 573553663 is about 830.8539442674.

The spelling of 573553663 in words is "five hundred seventy-three million, five hundred fifty-three thousand, six hundred sixty-three".