558197661 has 24 divisors (see below), whose sum is σ = 866839584. Its totient is φ = 318578400.

The previous prime is 558197621. The next prime is 558197677. The reversal of 558197661 is 166791855.

558197661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 558197661 - 2¹¹ = 558195613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 558197661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (558197621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152691 + ... + 156303.

It is an arithmetic number, because the mean of its divisors is an integer number (36118316).

Almost surely, 2^558197661 is an apocalyptic number.

It is an amenable number.

558197661 is a deficient number, since it is larger than the sum of its proper divisors (308641923).

558197661 is a wasteful number, since it uses less digits than its factorization.

558197661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4681 (or 4674 counting only the distinct ones).

The product of its digits is 453600, while the sum is 48.

The square root of 558197661 is about 23626.2070802742. The cubic root of 558197661 is about 823.3718294417.

The spelling of 558197661 in words is "five hundred fifty-eight million, one hundred ninety-seven thousand, six hundred sixty-one".