12559643 has 6 divisors (see below), whose sum is σ = 12743724. Its totient is φ = 12376424.

The previous prime is 12559637. The next prime is 12559691. The reversal of 12559643 is 34695521.

It is not a de Polignac number, because 12559643 - 2⁶ = 12559579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12559343) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32093 + ... + 32481.

It is an arithmetic number, because the mean of its divisors is an integer number (2123954).

Almost surely, 2^12559643 is an apocalyptic number.

12559643 is a deficient number, since it is larger than the sum of its proper divisors (184081).

12559643 is an frugal number, since it uses more digits than its factorization.

12559643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861 (or 472 counting only the distinct ones).

The product of its digits is 32400, while the sum is 35.

The square root of 12559643 is about 3543.9586622871. The cubic root of 12559643 is about 232.4479738680.

The spelling of 12559643 in words is "twelve million, five hundred fifty-nine thousand, six hundred forty-three".