12855616 has 14 divisors (see below), whose sum is σ = 25510490. Its totient is φ = 6427776.

The previous prime is 12855593. The next prime is 12855617. The reversal of 12855616 is 61655821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12278016 + 577600 = 3504^2 + 760^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12855617) 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 as a sum of consecutive naturals, namely, 100371 + ... + 100498.

Almost surely, 2^12855616 is an apocalyptic number.

12855616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12855616 is a deficient number, since it is larger than the sum of its proper divisors (12654874).

12855616 is an equidigital number, since it uses as much as digits as its factorization.

12855616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200881 (or 200871 counting only the distinct ones).

The product of its digits is 14400, while the sum is 34.

The square root of 12855616 is about 3585.4729116255. The cubic root of 12855616 is about 234.2597257369.

The spelling of 12855616 in words is "twelve million, eight hundred fifty-five thousand, six hundred sixteen".