12988643 has 2 divisors, whose sum is σ = 12988644. Its totient is φ = 12988642.

The previous prime is 12988639. The next prime is 12988681. The reversal of 12988643 is 34688921.

It is a weak prime.

It is an emirp because it is prime and its reverse (34688921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12988643 - 2² = 12988639 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 12988643.

It is not a weakly prime, because it can be changed into another prime (12988603) 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, 6494321 + 6494322.

It is an arithmetic number, because the mean of its divisors is an integer number (6494322).

Almost surely, 2^12988643 is an apocalyptic number.

12988643 is a deficient number, since it is larger than the sum of its proper divisors (1).

12988643 is an equidigital number, since it uses as much as digits as its factorization.

12988643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 41.

The square root of 12988643 is about 3603.9759988102. The cubic root of 12988643 is about 235.0649767511.

It can be divided in two parts, 12988 and 643, that added together give a palindrome (13631).

The spelling of 12988643 in words is "twelve million, nine hundred eighty-eight thousand, six hundred forty-three".