109568169 has 12 divisors (see below), whose sum is σ = 159141892. Its totient is φ = 72640800.

The previous prime is 109568161. The next prime is 109568183. The reversal of 109568169 is 961865901.

It can be written as a sum of positive squares in 2 ways, for example, as 31775769 + 77792400 = 5637^2 + 8820^2 .

It is not a de Polignac number, because 109568169 - 2³ = 109568161 is a prime.

It is a super-2 number, since 2×109568169² = 24010367316025122, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (109568161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32002 + ... + 35259.

Almost surely, 2^109568169 is an apocalyptic number.

It is an amenable number.

109568169 is a deficient number, since it is larger than the sum of its proper divisors (49573723).

109568169 is a wasteful number, since it uses less digits than its factorization.

109568169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67448 (or 67445 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 109568169 is about 10467.4815022526. The cubic root of 109568169 is about 478.5141684009.

The spelling of 109568169 in words is "one hundred nine million, five hundred sixty-eight thousand, one hundred sixty-nine".