13668547 has 2 divisors, whose sum is σ = 13668548. Its totient is φ = 13668546.

The previous prime is 13668521. The next prime is 13668563. The reversal of 13668547 is 74586631.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13668547 - 2⁷ = 13668419 is a prime.

It is a Chen prime.

It is equal to p₈₈₉₉₂₄ and since 13668547 and 889924 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13668517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6834273 + 6834274.

It is an arithmetic number, because the mean of its divisors is an integer number (6834274).

Almost surely, 2^13668547 is an apocalyptic number.

13668547 is a deficient number, since it is larger than the sum of its proper divisors (1).

13668547 is an equidigital number, since it uses as much as digits as its factorization.

13668547 is an odious number, because the sum of its binary digits is odd.

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

The square root of 13668547 is about 3697.0998093100. The cubic root of 13668547 is about 239.0969944131.

The spelling of 13668547 in words is "thirteen million, six hundred sixty-eight thousand, five hundred forty-seven".