12657087 has 8 divisors (see below), whose sum is σ = 18751280. Its totient is φ = 8438040.

The previous prime is 12657077. The next prime is 12657091. The reversal of 12657087 is 78075621.

12657087 is a `hidden beast` number, since 1 + 2 + 6 + 570 + 87 = 666.

12657087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12657087 - 2¹¹ = 12655039 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 (12657077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234364 + ... + 234417.

It is an arithmetic number, because the mean of its divisors is an integer number (2343910).

Almost surely, 2^12657087 is an apocalyptic number.

12657087 is a deficient number, since it is larger than the sum of its proper divisors (6094193).

12657087 is an equidigital number, since it uses as much as digits as its factorization.

12657087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468790 (or 468784 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 12657087 is about 3557.6800024735. The cubic root of 12657087 is about 233.0475751244.

The spelling of 12657087 in words is "twelve million, six hundred fifty-seven thousand, eighty-seven".