13661227 has 8 divisors (see below), whose sum is σ = 13976064. Its totient is φ = 13348608.

The previous prime is 13661201. The next prime is 13661231. The reversal of 13661227 is 72216631.

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 13661227 - 2¹⁹ = 13136939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13661195 and 13661204.

It is not an unprimeable number, because it can be changed into a prime (13661237) 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 7 ways as a sum of consecutive naturals, for example, 19963 + ... + 20635.

It is an arithmetic number, because the mean of its divisors is an integer number (1747008).

Almost surely, 2^13661227 is an apocalyptic number.

13661227 is a deficient number, since it is larger than the sum of its proper divisors (314837).

13661227 is an equidigital number, since it uses as much as digits as its factorization.

13661227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109.

The product of its digits is 3024, while the sum is 28.

The square root of 13661227 is about 3696.1097115751. The cubic root of 13661227 is about 239.0543051031.

Adding to 13661227 its reverse (72216631), we get a palindrome (85877858).

The spelling of 13661227 in words is "thirteen million, six hundred sixty-one thousand, two hundred twenty-seven".