12993643 has 8 divisors (see below), whose sum is σ = 14601888. Its totient is φ = 11472384.

The previous prime is 12993641. The next prime is 12993649. The reversal of 12993643 is 34639921.

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 12993643 - 2¹ = 12993641 is a prime.

It is a super-2 number, since 2×12993643² = 337669516822898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12993641) 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, 21430 + ... + 22027.

It is an arithmetic number, because the mean of its divisors is an integer number (1825236).

Almost surely, 2^12993643 is an apocalyptic number.

12993643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12993643 is a deficient number, since it is larger than the sum of its proper divisors (1608245).

12993643 is a wasteful number, since it uses less digits than its factorization.

12993643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43493.

The product of its digits is 34992, while the sum is 37.

The square root of 12993643 is about 3604.6696103804. The cubic root of 12993643 is about 235.0951357677.

The spelling of 12993643 in words is "twelve million, nine hundred ninety-three thousand, six hundred forty-three".