12712668 has 48 divisors (see below), whose sum is σ = 31770144. Its totient is φ = 3942400.

The previous prime is 12712663. The next prime is 12712669. The reversal of 12712668 is 86621721.

It is a super-2 number, since 2×12712668² = 323223855356448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12712663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20296 + ... + 20912.

It is an arithmetic number, because the mean of its divisors is an integer number (661878).

Almost surely, 2^12712668 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 12712668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15885072).

12712668 is an abundant number, since it is smaller than the sum of its proper divisors (19057476).

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

12712668 is a wasteful number, since it uses less digits than its factorization.

12712668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 740 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 12712668 is about 3565.4828565006. The cubic root of 12712668 is about 233.3882038757.

The spelling of 12712668 in words is "twelve million, seven hundred twelve thousand, six hundred sixty-eight".