13667261 has 2 divisors, whose sum is σ = 13667262. Its totient is φ = 13667260.

The previous prime is 13667243. The next prime is 13667293. The reversal of 13667261 is 16276631.

It is an a-pointer prime, because the next prime (13667293) can be obtained adding 13667261 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9647236 + 4020025 = 3106^2 + 2005^2 .

It is a cyclic number.

It is not a de Polignac number, because 13667261 - 2⁶ = 13667197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13667231) 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, 6833630 + 6833631.

It is an arithmetic number, because the mean of its divisors is an integer number (6833631).

Almost surely, 2^13667261 is an apocalyptic number.

It is an amenable number.

13667261 is a deficient number, since it is larger than the sum of its proper divisors (1).

13667261 is an equidigital number, since it uses as much as digits as its factorization.

13667261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 32.

The square root of 13667261 is about 3696.9258851105. The cubic root of 13667261 is about 239.0894957283.

The spelling of 13667261 in words is "thirteen million, six hundred sixty-seven thousand, two hundred sixty-one".