12645516 has 48 divisors (see below), whose sum is σ = 32125184. Its totient is φ = 3848256.

The previous prime is 12645509. The next prime is 12645533. The reversal of 12645516 is 61554621.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15675 + ... + 16461.

Almost surely, 2^12645516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12645516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16062592).

12645516 is an abundant number, since it is smaller than the sum of its proper divisors (19479668).

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

12645516 is a wasteful number, since it uses less digits than its factorization.

12645516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910 (or 908 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 12645516 is about 3556.0534304197. The cubic root of 12645516 is about 232.9765367766.

The spelling of 12645516 in words is "twelve million, six hundred forty-five thousand, five hundred sixteen".