12693688 has 32 divisors (see below), whose sum is σ = 27538560. Its totient is φ = 5372640.

The previous prime is 12693671. The next prime is 12693689. The reversal of 12693688 is 88639621.

It is a super-2 number, since 2×12693688² = 322259430082688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12693689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3283 + ... + 6013.

It is an arithmetic number, because the mean of its divisors is an integer number (860580).

Almost surely, 2^12693688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12693688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13769280).

12693688 is an abundant number, since it is smaller than the sum of its proper divisors (14844872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12693688 is a wasteful number, since it uses less digits than its factorization.

12693688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2827 (or 2823 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 12693688 is about 3562.8202312213. The cubic root of 12693688 is about 233.2719965761.

The spelling of 12693688 in words is "twelve million, six hundred ninety-three thousand, six hundred eighty-eight".