12493643 has 4 divisors (see below), whose sum is σ = 12798408. Its totient is φ = 12188880.

The previous prime is 12493639. The next prime is 12493667. The reversal of 12493643 is 34639421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12493643 - 2² = 12493639 is a prime.

It is a super-2 number, since 2×12493643² = 312182230822898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12493673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152321 + ... + 152402.

It is an arithmetic number, because the mean of its divisors is an integer number (3199602).

Almost surely, 2^12493643 is an apocalyptic number.

12493643 is a deficient number, since it is larger than the sum of its proper divisors (304765).

12493643 is an equidigital number, since it uses as much as digits as its factorization.

12493643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304764.

The product of its digits is 15552, while the sum is 32.

The square root of 12493643 is about 3534.6347760412. The cubic root of 12493643 is about 232.0400929025.

The spelling of 12493643 in words is "twelve million, four hundred ninety-three thousand, six hundred forty-three".