12681624 has 16 divisors (see below), whose sum is σ = 31704120. Its totient is φ = 4227200.

The previous prime is 12681623. The next prime is 12681629. The reversal of 12681624 is 42618621.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 12681591 and 12681600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12681623) 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, 264177 + ... + 264224.

Almost surely, 2^12681624 is an apocalyptic number.

It is an amenable number.

12681624 is an abundant number, since it is smaller than the sum of its proper divisors (19022496).

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

12681624 is a wasteful number, since it uses less digits than its factorization.

12681624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528410 (or 528406 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 12681624 is about 3561.1267879703. The cubic root of 12681624 is about 233.1980730805.

The spelling of 12681624 in words is "twelve million, six hundred eighty-one thousand, six hundred twenty-four".