13366961 has 2 divisors, whose sum is σ = 13366962. Its totient is φ = 13366960.

The previous prime is 13366949. The next prime is 13366963. The reversal of 13366961 is 16966331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13366336 + 625 = 3656^2 + 25^2 .

It is a cyclic number.

It is not a de Polignac number, because 13366961 - 2⁶ = 13366897 is a prime.

It is a Sophie Germain prime.

Together with 13366963, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13366963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6683480 + 6683481.

It is an arithmetic number, because the mean of its divisors is an integer number (6683481).

Almost surely, 2^13366961 is an apocalyptic number.

It is an amenable number.

13366961 is a deficient number, since it is larger than the sum of its proper divisors (1).

13366961 is an equidigital number, since it uses as much as digits as its factorization.

13366961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 35.

The square root of 13366961 is about 3656.0854749308. The cubic root of 13366961 is about 237.3254029792.

The spelling of 13366961 in words is "thirteen million, three hundred sixty-six thousand, nine hundred sixty-one".