12487867 has 4 divisors (see below), whose sum is σ = 14271856. Its totient is φ = 10703880.

The previous prime is 12487861. The next prime is 12487889. The reversal of 12487867 is 76878421.

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 12487867 - 2²³ = 4099259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12487861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891984 + ... + 891997.

It is an arithmetic number, because the mean of its divisors is an integer number (3567964).

Almost surely, 2^12487867 is an apocalyptic number.

12487867 is a deficient number, since it is larger than the sum of its proper divisors (1783989).

12487867 is an equidigital number, since it uses as much as digits as its factorization.

12487867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783988.

The product of its digits is 150528, while the sum is 43.

The square root of 12487867 is about 3533.8176240434. The cubic root of 12487867 is about 232.0043288431.

The spelling of 12487867 in words is "twelve million, four hundred eighty-seven thousand, eight hundred sixty-seven".