12653843 has 4 divisors (see below), whose sum is σ = 12662328. Its totient is φ = 12645360.

The previous prime is 12653827. The next prime is 12653863. The reversal of 12653843 is 34835621.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 34835621 = 881 ⋅39541.

It is a cyclic number.

It is not a de Polignac number, because 12653843 - 2⁴ = 12653827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12653863) 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, 1346 + ... + 5207.

It is an arithmetic number, because the mean of its divisors is an integer number (3165582).

Almost surely, 2^12653843 is an apocalyptic number.

12653843 is a deficient number, since it is larger than the sum of its proper divisors (8485).

12653843 is an equidigital number, since it uses as much as digits as its factorization.

12653843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8484.

The product of its digits is 17280, while the sum is 32.

The square root of 12653843 is about 3557.2240581667. The cubic root of 12653843 is about 233.0276634619.

The spelling of 12653843 in words is "twelve million, six hundred fifty-three thousand, eight hundred forty-three".