109717 has 2 divisors, whose sum is σ = 109718. Its totient is φ = 109716.

The previous prime is 109673. The next prime is 109721. The reversal of 109717 is 717901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96721 + 12996 = 311^2 + 114^2 .

It is a cyclic number.

It is not a de Polignac number, because 109717 - 2⁷ = 109589 is a prime.

It is an Ulam number.

109717 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 109691 and 109700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54858 + 54859.

It is an arithmetic number, because the mean of its divisors is an integer number (54859).

2¹⁰⁹⁷¹⁷ is an apocalyptic number.

It is an amenable number.

109717 is a deficient number, since it is larger than the sum of its proper divisors (1).

109717 is an equidigital number, since it uses as much as digits as its factorization.

109717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 441, while the sum is 25.

The square root of 109717 is about 331.2355657232. The cubic root of 109717 is about 47.8730732272.

The spelling of 109717 in words is "one hundred nine thousand, seven hundred seventeen".