13661017 has 2 divisors, whose sum is σ = 13661018. Its totient is φ = 13661016.

The previous prime is 13661003. The next prime is 13661033. The reversal of 13661017 is 71016631.

It is a happy number.

13661017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8904256 + 4756761 = 2984^2 + 2181^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13661017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13660982 and 13661000.

It is not a weakly prime, because it can be changed into another prime (13661317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6830508 + 6830509.

It is an arithmetic number, because the mean of its divisors is an integer number (6830509).

Almost surely, 2^13661017 is an apocalyptic number.

It is an amenable number.

13661017 is a deficient number, since it is larger than the sum of its proper divisors (1).

13661017 is an equidigital number, since it uses as much as digits as its factorization.

13661017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 13661017 is about 3696.0813032183. The cubic root of 13661017 is about 239.0530801847.

Adding to 13661017 its reverse (71016631), we get a palindrome (84677648).

The spelling of 13661017 in words is "thirteen million, six hundred sixty-one thousand, seventeen".