558917661 has 16 divisors (see below), whose sum is σ = 784970240. Its totient is φ = 352764720.

The previous prime is 558917651. The next prime is 558917669. The reversal of 558917661 is 166719855.

It is not a de Polignac number, because 558917661 - 2⁵ = 558917629 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 558917661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (558917669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129606 + ... + 133848.

It is an arithmetic number, because the mean of its divisors is an integer number (49060640).

Almost surely, 2^558917661 is an apocalyptic number.

It is an amenable number.

558917661 is a deficient number, since it is larger than the sum of its proper divisors (226052579).

558917661 is a wasteful number, since it uses less digits than its factorization.

558917661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6576.

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

The square root of 558917661 is about 23641.4394866303. The cubic root of 558917661 is about 823.7256903597.

The spelling of 558917661 in words is "five hundred fifty-eight million, nine hundred seventeen thousand, six hundred sixty-one".