108709 has 2 divisors, whose sum is σ = 108710. Its totient is φ = 108708.

The previous prime is 108707. The next prime is 108727. The reversal of 108709 is 907801.

108709 is nontrivially palindromic in base 11.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91809 + 16900 = 303^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 108709 - 2¹ = 108707 is a prime.

Together with 108707, it forms a pair of twin primes.

108709 is an undulating number in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54354 + 54355.

It is an arithmetic number, because the mean of its divisors is an integer number (54355).

2¹⁰⁸⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

108709 is a deficient number, since it is larger than the sum of its proper divisors (1).

108709 is an equidigital number, since it uses as much as digits as its factorization.

108709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 108709 is about 329.7104790570. The cubic root of 108709 is about 47.7260142869.

The spelling of 108709 in words is "one hundred eight thousand, seven hundred nine".