12653911 has 4 divisors (see below), whose sum is σ = 12948232. Its totient is φ = 12359592.

The previous prime is 12653903. The next prime is 12653917. The reversal of 12653911 is 11935621.

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 12653911 - 2³ = 12653903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12653911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12653917) 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 3 ways as a sum of consecutive naturals, for example, 147096 + ... + 147181.

It is an arithmetic number, because the mean of its divisors is an integer number (3237058).

Almost surely, 2^12653911 is an apocalyptic number.

12653911 is a deficient number, since it is larger than the sum of its proper divisors (294321).

12653911 is an equidigital number, since it uses as much as digits as its factorization.

12653911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294320.

The product of its digits is 1620, while the sum is 28.

The square root of 12653911 is about 3557.2336161686. The cubic root of 12653911 is about 233.0280808807.

The spelling of 12653911 in words is "twelve million, six hundred fifty-three thousand, nine hundred eleven".