556679 has 2 divisors, whose sum is σ = 556680. Its totient is φ = 556678.

The previous prime is 556651. The next prime is 556687. The reversal of 556679 is 976655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556679 - 2¹² = 552583 is a prime.

It is an Ulam number.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556609) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278339 + 278340.

It is an arithmetic number, because the mean of its divisors is an integer number (278340).

2⁵⁵⁶⁶⁷⁹ is an apocalyptic number.

556679 is a deficient number, since it is larger than the sum of its proper divisors (1).

556679 is an equidigital number, since it uses as much as digits as its factorization.

556679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 38.

The square root of 556679 is about 746.1092413313. The cubic root of 556679 is about 82.2624448792.

The spelling of 556679 in words is "five hundred fifty-six thousand, six hundred seventy-nine".