12668487 has 16 divisors (see below), whose sum is σ = 18315360. Its totient is φ = 7742592.

The previous prime is 12668483. The next prime is 12668489. The reversal of 12668487 is 78486621.

It is not a de Polignac number, because 12668487 - 2² = 12668483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12668483) 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 in 15 ways as a sum of consecutive naturals, for example, 5089 + ... + 7157.

It is an arithmetic number, because the mean of its divisors is an integer number (1144710).

Almost surely, 2^12668487 is an apocalyptic number.

12668487 is a deficient number, since it is larger than the sum of its proper divisors (5646873).

12668487 is a wasteful number, since it uses less digits than its factorization.

12668487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242.

The product of its digits is 129024, while the sum is 42.

The square root of 12668487 is about 3559.2818095790. The cubic root of 12668487 is about 233.1175213168.

The spelling of 12668487 in words is "twelve million, six hundred sixty-eight thousand, four hundred eighty-seven".