12966560 has 24 divisors (see below), whose sum is σ = 30633876. Its totient is φ = 5186560.

The previous prime is 12966559. The next prime is 12966589. The reversal of 12966560 is 6566921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12931216 + 35344 = 3596^2 + 188^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12966560.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 40361 + ... + 40680.

Almost surely, 2^12966560 is an apocalyptic number.

12966560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12966560 is an abundant number, since it is smaller than the sum of its proper divisors (17667316).

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

12966560 is an equidigital number, since it uses as much as digits as its factorization.

12966560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81056 (or 81048 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 12966560 is about 3600.9109958454. The cubic root of 12966560 is about 234.9316837785.

The spelling of 12966560 in words is "twelve million, nine hundred sixty-six thousand, five hundred sixty".