555630643 has 2 divisors, whose sum is σ = 555630644. Its totient is φ = 555630642.

The previous prime is 555630637. The next prime is 555630653. The reversal of 555630643 is 346036555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 555630643 - 2²⁵ = 522076211 is a prime.

It is a super-2 number, since 2×555630643² = 617450822881186898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (555630613) 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, 277815321 + 277815322.

It is an arithmetic number, because the mean of its divisors is an integer number (277815322).

Almost surely, 2^555630643 is an apocalyptic number.

555630643 is a deficient number, since it is larger than the sum of its proper divisors (1).

555630643 is an equidigital number, since it uses as much as digits as its factorization.

555630643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 37.

The square root of 555630643 is about 23571.8188309685. The cubic root of 555630643 is about 822.1077260875.

The spelling of 555630643 in words is "five hundred fifty-five million, six hundred thirty thousand, six hundred forty-three".