13668479 has 8 divisors (see below), whose sum is σ = 14977872. Its totient is φ = 12370240.

The previous prime is 13668443. The next prime is 13668481. The reversal of 13668479 is 97486631.

13668479 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 a de Polignac number, because none of the positive numbers 2^k-13668479 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 (13668419) 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, 104 + ... + 5229.

It is an arithmetic number, because the mean of its divisors is an integer number (1872234).

Almost surely, 2^13668479 is an apocalyptic number.

13668479 is a deficient number, since it is larger than the sum of its proper divisors (1309393).

13668479 is a wasteful number, since it uses less digits than its factorization.

13668479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5577.

The product of its digits is 217728, while the sum is 44.

The square root of 13668479 is about 3697.0906129009. The cubic root of 13668479 is about 239.0965979159.

The spelling of 13668479 in words is "thirteen million, six hundred sixty-eight thousand, four hundred seventy-nine".