12345687 has 48 divisors (see below), whose sum is σ = 20317440. Its totient is φ = 7185024.

The previous prime is 12345653. The next prime is 12345701. The reversal of 12345687 is 78654321.

12345687 is a `hidden beast` number, since 123 + 456 + 87 = 666.

It is not a de Polignac number, because 12345687 - 2⁶ = 12345623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12345637) 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 47 ways as a sum of consecutive naturals, for example, 169083 + ... + 169155.

It is an arithmetic number, because the mean of its divisors is an integer number (423280).

Almost surely, 2^12345687 is an apocalyptic number.

12345687 is a deficient number, since it is larger than the sum of its proper divisors (7971753).

12345687 is a wasteful number, since it uses less digits than its factorization.

12345687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 161 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 12345687 is about 3513.6429812945. The cubic root of 12345687 is about 231.1204746285.

The spelling of 12345687 in words is "twelve million, three hundred forty-five thousand, six hundred eighty-seven".