12643367 has 8 divisors (see below), whose sum is σ = 13882512. Its totient is φ = 11419200.

The previous prime is 12643363. The next prime is 12643373. The reversal of 12643367 is 76334621.

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

It is a cyclic number.

It is not a de Polignac number, because 12643367 - 2² = 12643363 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12643361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1934 + ... + 5387.

It is an arithmetic number, because the mean of its divisors is an integer number (1735314).

Almost surely, 2^12643367 is an apocalyptic number.

12643367 is a deficient number, since it is larger than the sum of its proper divisors (1239145).

12643367 is a wasteful number, since it uses less digits than its factorization.

12643367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7489.

The product of its digits is 18144, while the sum is 32.

The square root of 12643367 is about 3555.7512567670. The cubic root of 12643367 is about 232.9633385557.

Adding to 12643367 its reverse (76334621), we get a palindrome (88977988).

The spelling of 12643367 in words is "twelve million, six hundred forty-three thousand, three hundred sixty-seven".