12705560 has 32 divisors (see below), whose sum is σ = 32672160. Its totient is φ = 4356096.

The previous prime is 12705523. The next prime is 12705569. The reversal of 12705560 is 6550721.

12705560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12705560² = 322862509827200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12705569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22409 + ... + 22968.

It is an arithmetic number, because the mean of its divisors is an integer number (1021005).

Almost surely, 2^12705560 is an apocalyptic number.

12705560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12705560 is an abundant number, since it is smaller than the sum of its proper divisors (19966600).

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

12705560 is a wasteful number, since it uses less digits than its factorization.

12705560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45395 (or 45391 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 12705560 is about 3564.4859376914. The cubic root of 12705560 is about 233.3446978592.

The spelling of 12705560 in words is "twelve million, seven hundred five thousand, five hundred sixty".