13668259 has 4 divisors (see below), whose sum is σ = 14910840. Its totient is φ = 12425680.

The previous prime is 13668257. The next prime is 13668269. The reversal of 13668259 is 95286631.

13668259 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13668259 - 2¹ = 13668257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13668253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621274 + ... + 621295.

It is an arithmetic number, because the mean of its divisors is an integer number (3727710).

Almost surely, 2^13668259 is an apocalyptic number.

13668259 is a deficient number, since it is larger than the sum of its proper divisors (1242581).

13668259 is a wasteful number, since it uses less digits than its factorization.

13668259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242580.

The product of its digits is 77760, while the sum is 40.

The square root of 13668259 is about 3697.0608596560. The cubic root of 13668259 is about 239.0953151218.

The spelling of 13668259 in words is "thirteen million, six hundred sixty-eight thousand, two hundred fifty-nine".