13540717 has 2 divisors, whose sum is σ = 13540718. Its totient is φ = 13540716.

The previous prime is 13540691. The next prime is 13540729. The reversal of 13540717 is 71704531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13097161 + 443556 = 3619^2 + 666^2 .

It is a cyclic number.

It is not a de Polignac number, because 13540717 - 2²³ = 5152109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13540757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6770358 + 6770359.

It is an arithmetic number, because the mean of its divisors is an integer number (6770359).

Almost surely, 2^13540717 is an apocalyptic number.

It is an amenable number.

13540717 is a deficient number, since it is larger than the sum of its proper divisors (1).

13540717 is an equidigital number, since it uses as much as digits as its factorization.

13540717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 13540717 is about 3679.7713244168. The cubic root of 13540717 is about 238.3493034870.

It can be divided in two parts, 135407 and 17, that added together give a square (135424 = 368²).

The spelling of 13540717 in words is "thirteen million, five hundred forty thousand, seven hundred seventeen".