12660137 has 8 divisors (see below), whose sum is σ = 15230400. Its totient is φ = 10280304.

The previous prime is 12660113. The next prime is 12660139. The reversal of 12660137 is 73106621.

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 12660137 - 2²² = 8465833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12660139) 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, 47462 + ... + 47727.

It is an arithmetic number, because the mean of its divisors is an integer number (1903800).

Almost surely, 2^12660137 is an apocalyptic number.

It is an amenable number.

12660137 is a deficient number, since it is larger than the sum of its proper divisors (2570263).

12660137 is an equidigital number, since it uses as much as digits as its factorization.

12660137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95215.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 12660137 is about 3558.1086267847. The cubic root of 12660137 is about 233.0662929125.

Adding to 12660137 its reverse (73106621), we get a palindrome (85766758).

The spelling of 12660137 in words is "twelve million, six hundred sixty thousand, one hundred thirty-seven".