13641643 has 8 divisors (see below), whose sum is σ = 14426496. Its totient is φ = 12878400.

The previous prime is 13641637. The next prime is 13641671. The reversal of 13641643 is 34614631.

13641643 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-13641643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13641623) 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, 4096 + ... + 6637.

It is an arithmetic number, because the mean of its divisors is an integer number (1803312).

Almost surely, 2^13641643 is an apocalyptic number.

13641643 is a deficient number, since it is larger than the sum of its proper divisors (784853).

13641643 is a wasteful number, since it uses less digits than its factorization.

13641643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10805.

The product of its digits is 5184, while the sum is 28.

The square root of 13641643 is about 3693.4594894218. The cubic root of 13641643 is about 238.9400186774.

The spelling of 13641643 in words is "thirteen million, six hundred forty-one thousand, six hundred forty-three".