558721663 has 4 divisors (see below), whose sum is σ = 559743640. Its totient is φ = 557699688.

The previous prime is 558721621. The next prime is 558721679. The reversal of 558721663 is 366127855.

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 558721663 - 2²⁵ = 525167231 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 (558721613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510168 + ... + 511261.

It is an arithmetic number, because the mean of its divisors is an integer number (139935910).

Almost surely, 2^558721663 is an apocalyptic number.

558721663 is a deficient number, since it is larger than the sum of its proper divisors (1021977).

558721663 is a wasteful number, since it uses less digits than its factorization.

558721663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021976.

The product of its digits is 302400, while the sum is 43.

The square root of 558721663 is about 23637.2939017985. The cubic root of 558721663 is about 823.6293926551.

The spelling of 558721663 in words is "five hundred fifty-eight million, seven hundred twenty-one thousand, six hundred sixty-three".