12668477 has 2 divisors, whose sum is σ = 12668478. Its totient is φ = 12668476.

The previous prime is 12668449. The next prime is 12668483. The reversal of 12668477 is 77486621.

12668477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9205156 + 3463321 = 3034^2 + 1861^2 .

It is a cyclic number.

It is not a de Polignac number, because 12668477 - 2⁶ = 12668413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12668977) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6334238 + 6334239.

It is an arithmetic number, because the mean of its divisors is an integer number (6334239).

Almost surely, 2^12668477 is an apocalyptic number.

It is an amenable number.

12668477 is a deficient number, since it is larger than the sum of its proper divisors (1).

12668477 is an equidigital number, since it uses as much as digits as its factorization.

12668477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 41.

The square root of 12668477 is about 3559.2804048009. The cubic root of 12668477 is about 233.1174599789.

The spelling of 12668477 in words is "twelve million, six hundred sixty-eight thousand, four hundred seventy-seven".