13566243 has 8 divisors (see below), whose sum is σ = 18137088. Its totient is φ = 9019784.

The previous prime is 13566239. The next prime is 13566253. The reversal of 13566243 is 34266531.

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 13566243 - 2² = 13566239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13566243.

It is not an unprimeable number, because it can be changed into a prime (13566253) 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, 4755 + ... + 7052.

It is an arithmetic number, because the mean of its divisors is an integer number (2267136).

Almost surely, 2^13566243 is an apocalyptic number.

13566243 is a deficient number, since it is larger than the sum of its proper divisors (4570845).

13566243 is a wasteful number, since it uses less digits than its factorization.

13566243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12193.

The product of its digits is 12960, while the sum is 30.

The square root of 13566243 is about 3683.2381133997. The cubic root of 13566243 is about 238.4989825429.

The spelling of 13566243 in words is "thirteen million, five hundred sixty-six thousand, two hundred forty-three".