13678481 has 2 divisors, whose sum is σ = 13678482. Its totient is φ = 13678480.

The previous prime is 13678453. The next prime is 13678507. The reversal of 13678481 is 18487631.

13678481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8904256 + 4774225 = 2984^2 + 2185^2 .

It is an emirp because it is prime and its reverse (18487631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13678481 - 2⁶ = 13678417 is a prime.

It is a super-2 number, since 2×13678481² = 374201684934722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13678411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6839240 + 6839241.

It is an arithmetic number, because the mean of its divisors is an integer number (6839241).

Almost surely, 2^13678481 is an apocalyptic number.

It is an amenable number.

13678481 is a deficient number, since it is larger than the sum of its proper divisors (1).

13678481 is an equidigital number, since it uses as much as digits as its factorization.

13678481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 38.

The square root of 13678481 is about 3698.4430507985. The cubic root of 13678481 is about 239.1549038691.

The spelling of 13678481 in words is "thirteen million, six hundred seventy-eight thousand, four hundred eighty-one".