109685773 has 2 divisors, whose sum is σ = 109685774. Its totient is φ = 109685772.

The previous prime is 109685759. The next prime is 109685777. The reversal of 109685773 is 377586901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64352484 + 45333289 = 8022^2 + 6733^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109685773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109685777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54842886 + 54842887.

It is an arithmetic number, because the mean of its divisors is an integer number (54842887).

Almost surely, 2^109685773 is an apocalyptic number.

It is an amenable number.

109685773 is a deficient number, since it is larger than the sum of its proper divisors (1).

109685773 is an equidigital number, since it uses as much as digits as its factorization.

109685773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 109685773 is about 10473.0975838097. The cubic root of 109685773 is about 478.6853101312.

The spelling of 109685773 in words is "one hundred nine million, six hundred eighty-five thousand, seven hundred seventy-three".