12688503 has 8 divisors (see below), whose sum is σ = 16952448. Its totient is φ = 8441784.

The previous prime is 12688471. The next prime is 12688513. The reversal of 12688503 is 30588621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12688503 - 2⁵ = 12688471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12688513) 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 7 ways as a sum of consecutive naturals, for example, 2475 + ... + 5612.

It is an arithmetic number, because the mean of its divisors is an integer number (2119056).

Almost surely, 2^12688503 is an apocalyptic number.

12688503 is a deficient number, since it is larger than the sum of its proper divisors (4263945).

12688503 is an equidigital number, since it uses as much as digits as its factorization.

12688503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8613.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 12688503 is about 3562.0925030100. The cubic root of 12688503 is about 233.2402306564.

The spelling of 12688503 in words is "twelve million, six hundred eighty-eight thousand, five hundred three".