12905617 has 8 divisors (see below), whose sum is σ = 13707360. Its totient is φ = 12116160.

The previous prime is 12905603. The next prime is 12905639. The reversal of 12905617 is 71650921.

12905617 is digitally balanced in base 3, 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 12905617 - 2¹⁹ = 12381329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12905647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 859 + ... + 5152.

It is an arithmetic number, because the mean of its divisors is an integer number (1713420).

Almost surely, 2^12905617 is an apocalyptic number.

It is an amenable number.

12905617 is a deficient number, since it is larger than the sum of its proper divisors (801743).

12905617 is a wasteful number, since it uses less digits than its factorization.

12905617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6143.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 12905617 is about 3592.4388651722. The cubic root of 12905617 is about 234.5630449857.

The spelling of 12905617 in words is "twelve million, nine hundred five thousand, six hundred seventeen".