12917605 has 8 divisors (see below), whose sum is σ = 16175232. Its totient is φ = 9884688.

The previous prime is 12917599. The next prime is 12917609. The reversal of 12917605 is 50671921.

12917605 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 12917605 - 2⁵ = 12917573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12917609) 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, 56049 + ... + 56278.

It is an arithmetic number, because the mean of its divisors is an integer number (2021904).

Almost surely, 2^12917605 is an apocalyptic number.

It is an amenable number.

12917605 is a deficient number, since it is larger than the sum of its proper divisors (3257627).

12917605 is a wasteful number, since it uses less digits than its factorization.

12917605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112355.

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

The square root of 12917605 is about 3594.1069822697. The cubic root of 12917605 is about 234.6356508792.

The spelling of 12917605 in words is "twelve million, nine hundred seventeen thousand, six hundred five".