12671587 has 2 divisors, whose sum is σ = 12671588. Its totient is φ = 12671586.

The previous prime is 12671573. The next prime is 12671599. The reversal of 12671587 is 78517621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12671587 - 2²³ = 4282979 is a prime.

It is not a weakly prime, because it can be changed into another prime (12671557) 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, 6335793 + 6335794.

It is an arithmetic number, because the mean of its divisors is an integer number (6335794).

Almost surely, 2^12671587 is an apocalyptic number.

12671587 is a deficient number, since it is larger than the sum of its proper divisors (1).

12671587 is an equidigital number, since it uses as much as digits as its factorization.

12671587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 37.

The square root of 12671587 is about 3559.7172640534. The cubic root of 12671587 is about 233.1365345154.

The spelling of 12671587 in words is "twelve million, six hundred seventy-one thousand, five hundred eighty-seven".