173365985 has 16 divisors (see below), whose sum is σ = 225430464. Its totient is φ = 127230912.

The previous prime is 173365967. The next prime is 173365987. The reversal of 173365985 is 589563371.

173365985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 173365985 - 2⁶ = 173365921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173365987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2414 + ... + 18776.

It is an arithmetic number, because the mean of its divisors is an integer number (14089404).

Almost surely, 2^173365985 is an apocalyptic number.

It is an amenable number.

173365985 is a deficient number, since it is larger than the sum of its proper divisors (52064479).

173365985 is a wasteful number, since it uses less digits than its factorization.

173365985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16544.

The product of its digits is 680400, while the sum is 47.

The square root of 173365985 is about 13166.8517497540. The cubic root of 173365985 is about 557.5981152766.

The spelling of 173365985 in words is "one hundred seventy-three million, three hundred sixty-five thousand, nine hundred eighty-five".