12987627 has 4 divisors (see below), whose sum is σ = 17316840. Its totient is φ = 8658416.

The previous prime is 12987599. The next prime is 12987647. The reversal of 12987627 is 72678921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12987627 - 2¹⁸ = 12725483 is a prime.

It is a super-2 number, since 2×12987627² = 337356910182258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12987647) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2164602 + ... + 2164607.

It is an arithmetic number, because the mean of its divisors is an integer number (4329210).

Almost surely, 2^12987627 is an apocalyptic number.

12987627 is a deficient number, since it is larger than the sum of its proper divisors (4329213).

12987627 is an equidigital number, since it uses as much as digits as its factorization.

12987627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4329212.

The product of its digits is 84672, while the sum is 42.

The square root of 12987627 is about 3603.8350406199. The cubic root of 12987627 is about 235.0588474928.

The spelling of 12987627 in words is "twelve million, nine hundred eighty-seven thousand, six hundred twenty-seven".