13668679 has 2 divisors, whose sum is σ = 13668680. Its totient is φ = 13668678.

The previous prime is 13668661. The next prime is 13668701. The reversal of 13668679 is 97686631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13668679 - 2⁹ = 13668167 is a prime.

It is a super-3 number, since 3×13668679³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13668379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6834339 + 6834340.

It is an arithmetic number, because the mean of its divisors is an integer number (6834340).

Almost surely, 2^13668679 is an apocalyptic number.

13668679 is a deficient number, since it is larger than the sum of its proper divisors (1).

13668679 is an equidigital number, since it uses as much as digits as its factorization.

13668679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 46.

The square root of 13668679 is about 3697.1176610976. The cubic root of 13668679 is about 239.0977640804.

The spelling of 13668679 in words is "thirteen million, six hundred sixty-eight thousand, six hundred seventy-nine".