12646135 has 4 divisors (see below), whose sum is σ = 15175368. Its totient is φ = 10116904.

The previous prime is 12646121. The next prime is 12646141. The reversal of 12646135 is 53164621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53164621 = 773 ⋅68777.

It is a cyclic number.

It is not a de Polignac number, because 12646135 - 2⁹ = 12645623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1264609 + ... + 1264618.

It is an arithmetic number, because the mean of its divisors is an integer number (3793842).

Almost surely, 2^12646135 is an apocalyptic number.

12646135 is a deficient number, since it is larger than the sum of its proper divisors (2529233).

12646135 is an equidigital number, since it uses as much as digits as its factorization.

12646135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529232.

The product of its digits is 4320, while the sum is 28.

The square root of 12646135 is about 3556.1404640424. The cubic root of 12646135 is about 232.9803381273.

The spelling of 12646135 in words is "twelve million, six hundred forty-six thousand, one hundred thirty-five".