12613985 has 8 divisors (see below), whose sum is σ = 15658920. Its totient is φ = 9743104.

The previous prime is 12613981. The next prime is 12613999. The reversal of 12613985 is 58931621.

It can be written as a sum of positive squares in 4 ways, for example, as 2835856 + 9778129 = 1684^2 + 3127^2 .

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 12613985 - 2² = 12613981 is a prime.

It is a super-3 number, since 3×12613985³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (12613981) 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, 43352 + ... + 43641.

It is an arithmetic number, because the mean of its divisors is an integer number (1957365).

Almost surely, 2^12613985 is an apocalyptic number.

It is an amenable number.

12613985 is a deficient number, since it is larger than the sum of its proper divisors (3044935).

12613985 is an equidigital number, since it uses as much as digits as its factorization.

12613985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87027.

The product of its digits is 12960, while the sum is 35.

The square root of 12613985 is about 3551.6172372597. The cubic root of 12613985 is about 232.7827369276.

The spelling of 12613985 in words is "twelve million, six hundred thirteen thousand, nine hundred eighty-five".