13668457 has 8 divisors (see below), whose sum is σ = 15275232. Its totient is φ = 12122400.

The previous prime is 13668443. The next prime is 13668481. The reversal of 13668457 is 75486631.

It is a happy number.

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 13668457 - 2¹⁵ = 13635689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13668407) 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, 14703 + ... + 15604.

It is an arithmetic number, because the mean of its divisors is an integer number (1909404).

Almost surely, 2^13668457 is an apocalyptic number.

It is an amenable number.

13668457 is a deficient number, since it is larger than the sum of its proper divisors (1606775).

13668457 is a wasteful number, since it uses less digits than its factorization.

13668457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30359.

The product of its digits is 120960, while the sum is 40.

The square root of 13668457 is about 3697.0876375872. The cubic root of 13668457 is about 239.0964696371.

The spelling of 13668457 in words is "thirteen million, six hundred sixty-eight thousand, four hundred fifty-seven".