12643359 has 16 divisors (see below), whose sum is σ = 17965152. Its totient is φ = 7881728.

The previous prime is 12643349. The next prime is 12643361. The reversal of 12643359 is 95334621.

12643359 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12643359 - 2¹¹ = 12641311 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12643349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8107 + ... + 9539.

It is an arithmetic number, because the mean of its divisors is an integer number (1122822).

Almost surely, 2^12643359 is an apocalyptic number.

12643359 is a deficient number, since it is larger than the sum of its proper divisors (5321793).

12643359 is a wasteful number, since it uses less digits than its factorization.

12643359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626.

The product of its digits is 19440, while the sum is 33.

The square root of 12643359 is about 3555.7501318287. The cubic root of 12643359 is about 232.9632894204.

It can be divided in two parts, 126433 and 59, that multiplied together give a palindrome (7459547).

The spelling of 12643359 in words is "twelve million, six hundred forty-three thousand, three hundred fifty-nine".