12390687 has 12 divisors (see below), whose sum is σ = 17950504. Its totient is φ = 8236080.

The previous prime is 12390673. The next prime is 12390701. The reversal of 12390687 is 78609321.

It is an interprime number because it is at equal distance from previous prime (12390673) and next prime (12390701).

It is not a de Polignac number, because 12390687 - 2¹⁶ = 12325151 is a prime.

It is a Duffinian number.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12390617) 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 11 ways as a sum of consecutive naturals, for example, 1512 + ... + 5202.

Almost surely, 2^12390687 is an apocalyptic number.

12390687 is a deficient number, since it is larger than the sum of its proper divisors (5559817).

12390687 is a wasteful number, since it uses less digits than its factorization.

12390687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070 (or 4067 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 12390687 is about 3520.0407668094. The cubic root of 12390687 is about 231.4009453273.

The spelling of 12390687 in words is "twelve million, three hundred ninety thousand, six hundred eighty-seven".