12687237 has 12 divisors (see below), whose sum is σ = 19123104. Its totient is φ = 8090280.

The previous prime is 12687223. The next prime is 12687331. The reversal of 12687237 is 73278621.

It is not a de Polignac number, because 12687237 - 2⁷ = 12687109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12682237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30439 + ... + 30852.

It is an arithmetic number, because the mean of its divisors is an integer number (1593592).

Almost surely, 2^12687237 is an apocalyptic number.

It is an amenable number.

12687237 is a deficient number, since it is larger than the sum of its proper divisors (6435867).

12687237 is a wasteful number, since it uses less digits than its factorization.

12687237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61320 (or 61317 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 12687237 is about 3561.9147940399. The cubic root of 12687237 is about 233.2324731887.

The spelling of 12687237 in words is "twelve million, six hundred eighty-seven thousand, two hundred thirty-seven".