12561626 has 16 divisors (see below), whose sum is σ = 23492160. Its totient is φ = 4894080.

The previous prime is 12561599. The next prime is 12561671. The reversal of 12561626 is 62616521.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40631 + ... + 40938.

It is an arithmetic number, because the mean of its divisors is an integer number (1468260).

Almost surely, 2^12561626 is an apocalyptic number.

12561626 is a deficient number, since it is larger than the sum of its proper divisors (10930534).

12561626 is a wasteful number, since it uses less digits than its factorization.

12561626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81589.

The product of its digits is 4320, while the sum is 29.

The square root of 12561626 is about 3544.2384231313. The cubic root of 12561626 is about 232.4602067018.

It can be divided in two parts, 1256 and 1626, that added together give a palindrome (2882).

The spelling of 12561626 in words is "twelve million, five hundred sixty-one thousand, six hundred twenty-six".