12555679 has 2 divisors, whose sum is σ = 12555680. Its totient is φ = 12555678.

The previous prime is 12555667. The next prime is 12555703. The reversal of 12555679 is 97655521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12555679 - 2⁷ = 12555551 is a prime.

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 (12555629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6277839 + 6277840.

It is an arithmetic number, because the mean of its divisors is an integer number (6277840).

Almost surely, 2^12555679 is an apocalyptic number.

12555679 is a deficient number, since it is larger than the sum of its proper divisors (1).

12555679 is an equidigital number, since it uses as much as digits as its factorization.

12555679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94500, while the sum is 40.

The square root of 12555679 is about 3543.3993565501. The cubic root of 12555679 is about 232.4235166780.

The spelling of 12555679 in words is "twelve million, five hundred fifty-five thousand, six hundred seventy-nine".