12888641 has 2 divisors, whose sum is σ = 12888642. Its totient is φ = 12888640.

The previous prime is 12888619. The next prime is 12888643. The reversal of 12888641 is 14688821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11458225 + 1430416 = 3385^2 + 1196^2 .

It is a cyclic number.

It is not a de Polignac number, because 12888641 - 2¹⁰ = 12887617 is a prime.

It is a super-2 number, since 2×12888641² = 332234133653762, which contains 22 as substring.

Together with 12888643, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12888595 and 12888604.

It is not a weakly prime, because it can be changed into another prime (12888643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6444320 + 6444321.

It is an arithmetic number, because the mean of its divisors is an integer number (6444321).

Almost surely, 2^12888641 is an apocalyptic number.

It is an amenable number.

12888641 is a deficient number, since it is larger than the sum of its proper divisors (1).

12888641 is an equidigital number, since it uses as much as digits as its factorization.

12888641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24576, while the sum is 38.

The square root of 12888641 is about 3590.0753473987. The cubic root of 12888641 is about 234.4601520755.

The spelling of 12888641 in words is "twelve million, eight hundred eighty-eight thousand, six hundred forty-one".