12887966 has 32 divisors (see below), whose sum is σ = 25052160. Its totient is φ = 4828896.

The previous prime is 12887933. The next prime is 12887993. The reversal of 12887966 is 66978821.

It is a self number, because there is not a number n which added to its sum of digits gives 12887966.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1595 + ... + 5321.

It is an arithmetic number, because the mean of its divisors is an integer number (782880).

Almost surely, 2^12887966 is an apocalyptic number.

12887966 is a deficient number, since it is larger than the sum of its proper divisors (12164194).

12887966 is a wasteful number, since it uses less digits than its factorization.

12887966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3768.

The product of its digits is 290304, while the sum is 47.

The square root of 12887966 is about 3589.9813369988. The cubic root of 12887966 is about 234.4560589787.

The spelling of 12887966 in words is "twelve million, eight hundred eighty-seven thousand, nine hundred sixty-six".