173349805 has 4 divisors (see below), whose sum is σ = 208019772. Its totient is φ = 138679840.

The previous prime is 173349769. The next prime is 173349851. The reversal of 173349805 is 508943371.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 508943371 = 73 ⋅6971827.

It can be written as a sum of positive squares in 2 ways, for example, as 46539684 + 126810121 = 6822^2 + 11261^2 .

It is not a de Polignac number, because 173349805 - 2¹⁵ = 173317037 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 17334976 + ... + 17334985.

It is an arithmetic number, because the mean of its divisors is an integer number (52004943).

Almost surely, 2^173349805 is an apocalyptic number.

It is an amenable number.

173349805 is a deficient number, since it is larger than the sum of its proper divisors (34669967).

173349805 is an equidigital number, since it uses as much as digits as its factorization.

173349805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34669966.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 173349805 is about 13166.2373136747. The cubic root of 173349805 is about 557.5807681248.

The spelling of 173349805 in words is "one hundred seventy-three million, three hundred forty-nine thousand, eight hundred five".