12173345 has 4 divisors (see below), whose sum is σ = 14608020. Its totient is φ = 9738672.

The previous prime is 12173327. The next prime is 12173353. The reversal of 12173345 is 54337121.

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 1669264 + 10504081 = 1292^2 + 3241^2 .

It is a cyclic number.

It is not a de Polignac number, because 12173345 - 2¹² = 12169249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1217330 + ... + 1217339.

It is an arithmetic number, because the mean of its divisors is an integer number (3652005).

Almost surely, 2^12173345 is an apocalyptic number.

It is an amenable number.

12173345 is a deficient number, since it is larger than the sum of its proper divisors (2434675).

12173345 is an equidigital number, since it uses as much as digits as its factorization.

12173345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434674.

The product of its digits is 2520, while the sum is 26.

The square root of 12173345 is about 3489.0321007408. The cubic root of 12173345 is about 230.0399741485.

The spelling of 12173345 in words is "twelve million, one hundred seventy-three thousand, three hundred forty-five".