13740817 has 2 divisors, whose sum is σ = 13740818. Its totient is φ = 13740816.

The previous prime is 13740791. The next prime is 13740823. The reversal of 13740817 is 71804731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9431041 + 4309776 = 3071^2 + 2076^2 .

It is a cyclic number.

It is not a de Polignac number, because 13740817 - 2²³ = 5352209 is a prime.

It is not a weakly prime, because it can be changed into another prime (13740887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6870408 + 6870409.

It is an arithmetic number, because the mean of its divisors is an integer number (6870409).

Almost surely, 2^13740817 is an apocalyptic number.

It is an amenable number.

13740817 is a deficient number, since it is larger than the sum of its proper divisors (1).

13740817 is an equidigital number, since it uses as much as digits as its factorization.

13740817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 13740817 is about 3706.8608012711. The cubic root of 13740817 is about 239.5176481170.

The spelling of 13740817 in words is "thirteen million, seven hundred forty thousand, eight hundred seventeen".