109966345 has 4 divisors (see below), whose sum is σ = 131959620. Its totient is φ = 87973072.

The previous prime is 109966343. The next prime is 109966399. The reversal of 109966345 is 543669901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543669901 = 389 ⋅1397609.

It can be written as a sum of positive squares in 2 ways, for example, as 24810361 + 85155984 = 4981^2 + 9228^2 .

It is a cyclic number.

It is not a de Polignac number, because 109966345 - 2¹ = 109966343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109966343) 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 3 ways as a sum of consecutive naturals, for example, 10996630 + ... + 10996639.

It is an arithmetic number, because the mean of its divisors is an integer number (32989905).

Almost surely, 2^109966345 is an apocalyptic number.

It is an amenable number.

109966345 is a deficient number, since it is larger than the sum of its proper divisors (21993275).

109966345 is an equidigital number, since it uses as much as digits as its factorization.

109966345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21993274.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 109966345 is about 10486.4839197893. The cubic root of 109966345 is about 479.0931154991.

The spelling of 109966345 in words is "one hundred nine million, nine hundred sixty-six thousand, three hundred forty-five".