13723867 has 2 divisors, whose sum is σ = 13723868. Its totient is φ = 13723866.

The previous prime is 13723819. The next prime is 13723883. The reversal of 13723867 is 76832731.

It is a strong prime.

It is an emirp because it is prime and its reverse (76832731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13723867 is a prime.

It is not a weakly prime, because it can be changed into another prime (13723667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6861933 + 6861934.

It is an arithmetic number, because the mean of its divisors is an integer number (6861934).

Almost surely, 2^13723867 is an apocalyptic number.

13723867 is a deficient number, since it is larger than the sum of its proper divisors (1).

13723867 is an equidigital number, since it uses as much as digits as its factorization.

13723867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 37.

The square root of 13723867 is about 3704.5737946490. The cubic root of 13723867 is about 239.4191218403.

The spelling of 13723867 in words is "thirteen million, seven hundred twenty-three thousand, eight hundred sixty-seven".