557998663 has 2 divisors, whose sum is σ = 557998664. Its totient is φ = 557998662.

The previous prime is 557998621. The next prime is 557998673. The reversal of 557998663 is 366899755.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 557998663 - 2¹³ = 557990471 is a prime.

It is a super-2 number, since 2×557998663² = 622725015819575138, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 557998598 and 557998607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557998613) 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 as a sum of consecutive naturals, namely, 278999331 + 278999332.

It is an arithmetic number, because the mean of its divisors is an integer number (278999332).

Almost surely, 2^557998663 is an apocalyptic number.

557998663 is a deficient number, since it is larger than the sum of its proper divisors (1).

557998663 is an equidigital number, since it uses as much as digits as its factorization.

557998663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12247200, while the sum is 58.

The square root of 557998663 is about 23621.9953221568. The cubic root of 557998663 is about 823.2739735306.

The spelling of 557998663 in words is "five hundred fifty-seven million, nine hundred ninety-eight thousand, six hundred sixty-three".