12806587 has 2 divisors, whose sum is σ = 12806588. Its totient is φ = 12806586.

The previous prime is 12806557. The next prime is 12806597. The reversal of 12806587 is 78560821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12806587 - 2⁷ = 12806459 is a prime.

It is not a weakly prime, because it can be changed into another prime (12806527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6403293 + 6403294.

It is an arithmetic number, because the mean of its divisors is an integer number (6403294).

Almost surely, 2^12806587 is an apocalyptic number.

12806587 is a deficient number, since it is larger than the sum of its proper divisors (1).

12806587 is an equidigital number, since it uses as much as digits as its factorization.

12806587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 12806587 is about 3578.6292068333. The cubic root of 12806587 is about 233.9615382277.

The spelling of 12806587 in words is "twelve million, eight hundred six thousand, five hundred eighty-seven".