12638827 has 2 divisors, whose sum is σ = 12638828. Its totient is φ = 12638826.

The previous prime is 12638807. The next prime is 12638839. The reversal of 12638827 is 72883621.

12638827 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12638827 - 2⁷ = 12638699 is a prime.

It is not a weakly prime, because it can be changed into another prime (12638807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6319413 + 6319414.

It is an arithmetic number, because the mean of its divisors is an integer number (6319414).

Almost surely, 2^12638827 is an apocalyptic number.

12638827 is a deficient number, since it is larger than the sum of its proper divisors (1).

12638827 is an equidigital number, since it uses as much as digits as its factorization.

12638827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 37.

The square root of 12638827 is about 3555.1127970853. The cubic root of 12638827 is about 232.9354509374.

The spelling of 12638827 in words is "twelve million, six hundred thirty-eight thousand, eight hundred twenty-seven".