556667879 has 2 divisors, whose sum is σ = 556667880. Its totient is φ = 556667878.

The previous prime is 556667861. The next prime is 556667921. The reversal of 556667879 is 978766655.

556667879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 556667879 - 2⁸ = 556667623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556667819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278333939 + 278333940.

It is an arithmetic number, because the mean of its divisors is an integer number (278333940).

Almost surely, 2^556667879 is an apocalyptic number.

556667879 is a deficient number, since it is larger than the sum of its proper divisors (1).

556667879 is an equidigital number, since it uses as much as digits as its factorization.

556667879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19051200, while the sum is 59.

The square root of 556667879 is about 23593.8101840292. The cubic root of 556667879 is about 822.6189707896.

The spelling of 556667879 in words is "five hundred fifty-six million, six hundred sixty-seven thousand, eight hundred seventy-nine".