12605706 has 20 divisors (see below), whose sum is σ = 28246482. Its totient is φ = 4201848.

The previous prime is 12605689. The next prime is 12605707. The reversal of 12605706 is 60750621.

It can be written as a sum of positive squares in only one way, i.e., 7338681 + 5267025 = 2709^2 + 2295^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 12605706.

It is not an unprimeable number, because it can be changed into a prime (12605707) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 38745 + ... + 39068.

Almost surely, 2^12605706 is an apocalyptic number.

12605706 is an abundant number, since it is smaller than the sum of its proper divisors (15640776).

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

12605706 is an equidigital number, since it uses as much as digits as its factorization.

12605706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77827 (or 77818 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 12605706 is about 3550.4515205816. The cubic root of 12605706 is about 232.7317979615.

The spelling of 12605706 in words is "twelve million, six hundred five thousand, seven hundred six".