173630245 has 4 divisors (see below), whose sum is σ = 208356300. Its totient is φ = 138904192.

The previous prime is 173630213. The next prime is 173630311. The reversal of 173630245 is 542036371.

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 32638369 + 140991876 = 5713^2 + 11874^2 .

It is a cyclic number.

It is not a de Polignac number, because 173630245 - 2⁵ = 173630213 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 17363020 + ... + 17363029.

It is an arithmetic number, because the mean of its divisors is an integer number (52089075).

Almost surely, 2^173630245 is an apocalyptic number.

It is an amenable number.

173630245 is a deficient number, since it is larger than the sum of its proper divisors (34726055).

173630245 is an equidigital number, since it uses as much as digits as its factorization.

173630245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34726054.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 173630245 is about 13176.8829773964. The cubic root of 173630245 is about 557.8812851514.

The spelling of 173630245 in words is "one hundred seventy-three million, six hundred thirty thousand, two hundred forty-five".