12681633 has 16 divisors (see below), whose sum is σ = 17381120. Its totient is φ = 8221824.

The previous prime is 12681631. The next prime is 12681703. The reversal of 12681633 is 33618621.

It is not a de Polignac number, because 12681633 - 2¹ = 12681631 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12681633.

It is not an unprimeable number, because it can be changed into a prime (12681631) 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, 16935 + ... + 17667.

It is an arithmetic number, because the mean of its divisors is an integer number (1086320).

Almost surely, 2^12681633 is an apocalyptic number.

It is an amenable number.

12681633 is a deficient number, since it is larger than the sum of its proper divisors (4699487).

12681633 is an equidigital number, since it uses as much as digits as its factorization.

12681633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888.

The product of its digits is 5184, while the sum is 30.

The square root of 12681633 is about 3561.1280516151. The cubic root of 12681633 is about 233.1981282465.

The spelling of 12681633 in words is "twelve million, six hundred eighty-one thousand, six hundred thirty-three".