12845644 has 18 divisors (see below), whose sum is σ = 26150460. Its totient is φ = 5505192.

The previous prime is 12845641. The next prime is 12845647. The reversal of 12845644 is 44654821.

It is an interprime number because it is at equal distance from previous prime (12845641) and next prime (12845647).

It is not an unprimeable number, because it can be changed into a prime (12845641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32574 + ... + 32965.

Almost surely, 2^12845644 is an apocalyptic number.

12845644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12845644 is an abundant number, since it is smaller than the sum of its proper divisors (13304816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12845644 is a wasteful number, since it uses less digits than its factorization.

12845644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65557 (or 65548 counting only the distinct ones).

The product of its digits is 30720, while the sum is 34.

The square root of 12845644 is about 3584.0820303112. The cubic root of 12845644 is about 234.1991389277.

The spelling of 12845644 in words is "twelve million, eight hundred forty-five thousand, six hundred forty-four".