13662361 has 4 divisors (see below), whose sum is σ = 14031652. Its totient is φ = 13293072.

The previous prime is 13662323. The next prime is 13662367. The reversal of 13662361 is 16326631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16326631 = 1879 ⋅8689.

It can be written as a sum of positive squares in 2 ways, for example, as 4995225 + 8667136 = 2235^2 + 2944^2 .

It is a cyclic number.

It is not a de Polignac number, because 13662361 - 2⁹ = 13661849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13662367) 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 3 ways as a sum of consecutive naturals, for example, 184590 + ... + 184663.

It is an arithmetic number, because the mean of its divisors is an integer number (3507913).

Almost surely, 2^13662361 is an apocalyptic number.

It is an amenable number.

13662361 is a deficient number, since it is larger than the sum of its proper divisors (369291).

13662361 is an equidigital number, since it uses as much as digits as its factorization.

13662361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369290.

The product of its digits is 3888, while the sum is 28.

The square root of 13662361 is about 3696.2631129291. The cubic root of 13662361 is about 239.0609194450.

Adding to 13662361 its reverse (16326631), we get a palindrome (29988992).

The spelling of 13662361 in words is "thirteen million, six hundred sixty-two thousand, three hundred sixty-one".