13326661 has 8 divisors (see below), whose sum is σ = 13575744. Its totient is φ = 13079520.

The previous prime is 13326653. The next prime is 13326671. The reversal of 13326661 is 16662331.

13326661 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 not a de Polignac number, because 13326661 - 2³ = 13326653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13326611) 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, 22410 + ... + 22996.

It is an arithmetic number, because the mean of its divisors is an integer number (1696968).

Almost surely, 2^13326661 is an apocalyptic number.

It is an amenable number.

13326661 is a deficient number, since it is larger than the sum of its proper divisors (249083).

13326661 is an equidigital number, since it uses as much as digits as its factorization.

13326661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971.

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

The square root of 13326661 is about 3650.5699555001. The cubic root of 13326661 is about 237.0866590699.

Adding to 13326661 its reverse (16662331), we get a palindrome (29988992).

The spelling of 13326661 in words is "thirteen million, three hundred twenty-six thousand, six hundred sixty-one".