109041685 has 4 divisors (see below), whose sum is σ = 130850028. Its totient is φ = 87233344.

The previous prime is 109041683. The next prime is 109041697. The reversal of 109041685 is 586140901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51251281 + 57790404 = 7159^2 + 7602^2 .

It is a cyclic number.

It is not a de Polignac number, because 109041685 - 2¹ = 109041683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109041685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109041683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10904164 + ... + 10904173.

It is an arithmetic number, because the mean of its divisors is an integer number (32712507).

Almost surely, 2^109041685 is an apocalyptic number.

It is an amenable number.

109041685 is a deficient number, since it is larger than the sum of its proper divisors (21808343).

109041685 is an equidigital number, since it uses as much as digits as its factorization.

109041685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21808342.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 109041685 is about 10442.3026675154. The cubic root of 109041685 is about 477.7465043028.

The spelling of 109041685 in words is "one hundred nine million, forty-one thousand, six hundred eighty-five".