12628549 has 2 divisors, whose sum is σ = 12628550. Its totient is φ = 12628548.

The previous prime is 12628547. The next prime is 12628579. The reversal of 12628549 is 94582621.

12628549 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6723649 + 5904900 = 2593^2 + 2430^2 .

It is a cyclic number.

It is not a de Polignac number, because 12628549 - 2¹ = 12628547 is a prime.

Together with 12628547, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12628547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6314274 + 6314275.

It is an arithmetic number, because the mean of its divisors is an integer number (6314275).

Almost surely, 2^12628549 is an apocalyptic number.

It is an amenable number.

12628549 is a deficient number, since it is larger than the sum of its proper divisors (1).

12628549 is an equidigital number, since it uses as much as digits as its factorization.

12628549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 37.

The square root of 12628549 is about 3553.6669793328. Note that the first 3 decimals coincide. The cubic root of 12628549 is about 232.8722921272.

The spelling of 12628549 in words is "twelve million, six hundred twenty-eight thousand, five hundred forty-nine".