556646375 has 8 divisors (see below), whose sum is σ = 694694832. Its totient is φ = 445317000.

The previous prime is 556646327. The next prime is 556646383. The reversal of 556646375 is 573646655.

It is not a de Polignac number, because 556646375 - 2⁸ = 556646119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2226461 + ... + 2226710.

It is an arithmetic number, because the mean of its divisors is an integer number (86836854).

Almost surely, 2^556646375 is an apocalyptic number.

556646375 is a deficient number, since it is larger than the sum of its proper divisors (138048457).

556646375 is an equidigital number, since it uses as much as digits as its factorization.

556646375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4453186 (or 4453176 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 47.

The square root of 556646375 is about 23593.3544668833. The cubic root of 556646375 is about 822.6083781024.

The spelling of 556646375 in words is "five hundred fifty-six million, six hundred forty-six thousand, three hundred seventy-five".