108811609 has 2 divisors, whose sum is σ = 108811610. Its totient is φ = 108811608.

The previous prime is 108811579. The next prime is 108811693. The reversal of 108811609 is 906118801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73051209 + 35760400 = 8547^2 + 5980^2 .

It is a cyclic number.

It is not a de Polignac number, because 108811609 - 2⁷ = 108811481 is a prime.

It is not a weakly prime, because it can be changed into another prime (108811009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54405804 + 54405805.

It is an arithmetic number, because the mean of its divisors is an integer number (54405805).

Almost surely, 2^108811609 is an apocalyptic number.

It is an amenable number.

108811609 is a deficient number, since it is larger than the sum of its proper divisors (1).

108811609 is an equidigital number, since it uses as much as digits as its factorization.

108811609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 34.

The square root of 108811609 is about 10431.2803145156. The cubic root of 108811609 is about 477.4102555131.

The spelling of 108811609 in words is "one hundred eight million, eight hundred eleven thousand, six hundred nine".