12705117 has 8 divisors (see below), whose sum is σ = 16970496. Its totient is φ = 8454912.

The previous prime is 12705113. The next prime is 12705127. The reversal of 12705117 is 71150721.

It is a happy number.

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

It is not a de Polignac number, because 12705117 - 2² = 12705113 is a prime.

It is a super-2 number, since 2×12705117² = 322839995967378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12705113) 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, 1668 + ... + 5309.

It is an arithmetic number, because the mean of its divisors is an integer number (2121312).

Almost surely, 2^12705117 is an apocalyptic number.

It is an amenable number.

12705117 is a deficient number, since it is larger than the sum of its proper divisors (4265379).

12705117 is an equidigital number, since it uses as much as digits as its factorization.

12705117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7587.

The product of its (nonzero) digits is 490, while the sum is 24.

The square root of 12705117 is about 3564.4237963519. The cubic root of 12705117 is about 233.3419858469.

Adding to 12705117 its reverse (71150721), we get a palindrome (83855838).

The spelling of 12705117 in words is "twelve million, seven hundred five thousand, one hundred seventeen".