12688373 has 4 divisors (see below), whose sum is σ = 13031340. Its totient is φ = 12345408.

The previous prime is 12688369. The next prime is 12688391. The reversal of 12688373 is 37388621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11303044 + 1385329 = 3362^2 + 1177^2 .

It is a cyclic number.

It is not a de Polignac number, because 12688373 - 2² = 12688369 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 (12688303) 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, 171428 + ... + 171501.

It is an arithmetic number, because the mean of its divisors is an integer number (3257835).

Almost surely, 2^12688373 is an apocalyptic number.

It is an amenable number.

12688373 is a deficient number, since it is larger than the sum of its proper divisors (342967).

12688373 is an equidigital number, since it uses as much as digits as its factorization.

12688373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342966.

The product of its digits is 48384, while the sum is 38.

The square root of 12688373 is about 3562.0742552620. The cubic root of 12688373 is about 233.2394340997.

The spelling of 12688373 in words is "twelve million, six hundred eighty-eight thousand, three hundred seventy-three".