13623643 has 8 divisors (see below), whose sum is σ = 14888880. Its totient is φ = 12362880.

The previous prime is 13623641. The next prime is 13623653. The reversal of 13623643 is 34632631.

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

It is a cyclic number.

It is not a de Polignac number, because 13623643 - 2¹ = 13623641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13623641) 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, 11503 + ... + 12631.

It is an arithmetic number, because the mean of its divisors is an integer number (1861110).

Almost surely, 2^13623643 is an apocalyptic number.

13623643 is a deficient number, since it is larger than the sum of its proper divisors (1265237).

13623643 is a wasteful number, since it uses less digits than its factorization.

13623643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2237.

The product of its digits is 7776, while the sum is 28.

The square root of 13623643 is about 3691.0219452070. The cubic root of 13623643 is about 238.8348794994.

It can be divided in two parts, 1362 and 3643, that added together give a palindrome (5005).

The spelling of 13623643 in words is "thirteen million, six hundred twenty-three thousand, six hundred forty-three".