12561662 has 8 divisors (see below), whose sum is σ = 19302192. Its totient is φ = 6127600.

The previous prime is 12561599. The next prime is 12561671. The reversal of 12561662 is 26616521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76514 + ... + 76677.

It is an arithmetic number, because the mean of its divisors is an integer number (2412774).

Almost surely, 2^12561662 is an apocalyptic number.

12561662 is a deficient number, since it is larger than the sum of its proper divisors (6740530).

12561662 is a wasteful number, since it uses less digits than its factorization.

12561662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153234.

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

The square root of 12561662 is about 3544.2435017927. The cubic root of 12561662 is about 232.4604287685.

The spelling of 12561662 in words is "twelve million, five hundred sixty-one thousand, six hundred sixty-two".