12816605 has 8 divisors (see below), whose sum is σ = 15417600. Its totient is φ = 10228176.

The previous prime is 12816581. The next prime is 12816607. The reversal of 12816605 is 50661821.

It is a happy number.

12816605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12816605 - 2¹⁰ = 12815581 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12816607) 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, 725 + ... + 5114.

It is an arithmetic number, because the mean of its divisors is an integer number (1927200).

Almost surely, 2^12816605 is an apocalyptic number.

It is an amenable number.

12816605 is a deficient number, since it is larger than the sum of its proper divisors (2600995).

12816605 is an equidigital number, since it uses as much as digits as its factorization.

12816605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6283.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 12816605 is about 3580.0286311704. The cubic root of 12816605 is about 234.0225280865.

The spelling of 12816605 in words is "twelve million, eight hundred sixteen thousand, six hundred five".