13720361 has 2 divisors, whose sum is σ = 13720362. Its totient is φ = 13720360.

The previous prime is 13720349. The next prime is 13720379. The reversal of 13720361 is 16302731.

It is a happy number.

13720361 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., 13366336 + 354025 = 3656^2 + 595^2 .

It is an emirp because it is prime and its reverse (16302731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13720361 - 2¹⁰ = 13719337 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13720061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6860180 + 6860181.

It is an arithmetic number, because the mean of its divisors is an integer number (6860181).

Almost surely, 2^13720361 is an apocalyptic number.

It is an amenable number.

13720361 is a deficient number, since it is larger than the sum of its proper divisors (1).

13720361 is an equidigital number, since it uses as much as digits as its factorization.

13720361 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 23.

The square root of 13720361 is about 3704.1005655894. The cubic root of 13720361 is about 239.3987321807.

The spelling of 13720361 in words is "thirteen million, seven hundred twenty thousand, three hundred sixty-one".