12587906 has 16 divisors (see below), whose sum is σ = 19445184. Its totient is φ = 6108144.

The previous prime is 12587903. The next prime is 12587917. The reversal of 12587906 is 60978521.

It is a self number, because there is not a number n which added to its sum of digits gives 12587906.

It is not an unprimeable number, because it can be changed into a prime (12587903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16571 + ... + 17313.

It is an arithmetic number, because the mean of its divisors is an integer number (1215324).

Almost surely, 2^12587906 is an apocalyptic number.

12587906 is a deficient number, since it is larger than the sum of its proper divisors (6857278).

12587906 is a wasteful number, since it uses less digits than its factorization.

12587906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 12587906 is about 3547.9439116198. The cubic root of 12587906 is about 232.6222026874.

The spelling of 12587906 in words is "twelve million, five hundred eighty-seven thousand, nine hundred six".