12743621 has 8 divisors (see below), whose sum is σ = 13965600. Its totient is φ = 11532240.

The previous prime is 12743611. The next prime is 12743629. The reversal of 12743621 is 12634721.

12743621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12743621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12743629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11 + ... + 5048.

It is an arithmetic number, because the mean of its divisors is an integer number (1745700).

Almost surely, 2^12743621 is an apocalyptic number.

12743621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12743621 is a deficient number, since it is larger than the sum of its proper divisors (1221979).

12743621 is a wasteful number, since it uses less digits than its factorization.

12743621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5299.

The product of its digits is 2016, while the sum is 26.

The square root of 12743621 is about 3569.8208638530. The cubic root of 12743621 is about 233.5774694153.

Subtracting from 12743621 its reverse (12634721), we obtain a square (108900 = 330²).

The spelling of 12743621 in words is "twelve million, seven hundred forty-three thousand, six hundred twenty-one".