108605813 has 2 divisors, whose sum is σ = 108605814. Its totient is φ = 108605812.

The previous prime is 108605807. The next prime is 108605821. The reversal of 108605813 is 318506801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93566929 + 15038884 = 9673^2 + 3878^2 .

It is a cyclic number.

It is not a de Polignac number, because 108605813 - 2⁴ = 108605797 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 108605813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108605863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54302906 + 54302907.

It is an arithmetic number, because the mean of its divisors is an integer number (54302907).

Almost surely, 2^108605813 is an apocalyptic number.

It is an amenable number.

108605813 is a deficient number, since it is larger than the sum of its proper divisors (1).

108605813 is an equidigital number, since it uses as much as digits as its factorization.

108605813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 108605813 is about 10421.4112767897. The cubic root of 108605813 is about 477.1090893455.

The spelling of 108605813 in words is "one hundred eight million, six hundred five thousand, eight hundred thirteen".