12705570 has 48 divisors (see below), whose sum is σ = 33471360. Its totient is φ = 3343392.

The previous prime is 12705569. The next prime is 12705571. The reversal of 12705570 is 7550721.

12705570 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12705569) and next prime (12705571).

It is a super-2 number, since 2×12705570² = 322863018049800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12705571) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6217 + ... + 8003.

It is an arithmetic number, because the mean of its divisors is an integer number (697320).

Almost surely, 2^12705570 is an apocalyptic number.

12705570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12705570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16735680).

12705570 is an abundant number, since it is smaller than the sum of its proper divisors (20765790).

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

12705570 is a wasteful number, since it uses less digits than its factorization.

12705570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879 (or 1876 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 27.

The square root of 12705570 is about 3564.4873404180. The cubic root of 12705570 is about 233.3447590777.

The spelling of 12705570 in words is "twelve million, seven hundred five thousand, five hundred seventy".