12708137 has 8 divisors (see below), whose sum is σ = 13729800. Its totient is φ = 11692800.

The previous prime is 12708127. The next prime is 12708139. The reversal of 12708137 is 73180721.

It can be written as a sum of positive squares in 4 ways, for example, as 1290496 + 11417641 = 1136^2 + 3379^2 .

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 12708137 - 2²⁰ = 11659561 is a prime.

It is a super-2 number, since 2×12708137² = 322993492021538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12708139) 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, 3137 + ... + 5937.

It is an arithmetic number, because the mean of its divisors is an integer number (1716225).

Almost surely, 2^12708137 is an apocalyptic number.

It is an amenable number.

12708137 is a deficient number, since it is larger than the sum of its proper divisors (1021663).

12708137 is a wasteful number, since it uses less digits than its factorization.

12708137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3163.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 12708137 is about 3564.8474020637. The cubic root of 12708137 is about 233.3604728069.

Adding to 12708137 its reverse (73180721), we get a palindrome (85888858).

The spelling of 12708137 in words is "twelve million, seven hundred eight thousand, one hundred thirty-seven".