12766487 has 4 divisors (see below), whose sum is σ = 12788400. Its totient is φ = 12744576.

The previous prime is 12766483. The next prime is 12766519. The reversal of 12766487 is 78466721.

12766487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12766487 - 2² = 12766483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12766483) 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, 10058 + ... + 11255.

It is an arithmetic number, because the mean of its divisors is an integer number (3197100).

Almost surely, 2^12766487 is an apocalyptic number.

12766487 is a deficient number, since it is larger than the sum of its proper divisors (21913).

12766487 is an equidigital number, since it uses as much as digits as its factorization.

12766487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21912.

The product of its digits is 112896, while the sum is 41.

The square root of 12766487 is about 3573.0221102031. The cubic root of 12766487 is about 233.7170893641.

The spelling of 12766487 in words is "twelve million, seven hundred sixty-six thousand, four hundred eighty-seven".