13267643 has 4 divisors (see below), whose sum is σ = 13965960. Its totient is φ = 12569328.

The previous prime is 13267637. The next prime is 13267673. The reversal of 13267643 is 34676231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34676231 = 3229 ⋅10739.

It is a cyclic number.

It is not a de Polignac number, because 13267643 - 2⁴ = 13267627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13267613) 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, 349130 + ... + 349167.

It is an arithmetic number, because the mean of its divisors is an integer number (3491490).

Almost surely, 2^13267643 is an apocalyptic number.

13267643 is a deficient number, since it is larger than the sum of its proper divisors (698317).

13267643 is an equidigital number, since it uses as much as digits as its factorization.

13267643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698316.

The product of its digits is 18144, while the sum is 32.

The square root of 13267643 is about 3642.4775908714. The cubic root of 13267643 is about 236.7361564994.

The spelling of 13267643 in words is "thirteen million, two hundred sixty-seven thousand, six hundred forty-three".