173440073 has 4 divisors (see below), whose sum is σ = 173501460. Its totient is φ = 173378688.

The previous prime is 173440063. The next prime is 173440121. The reversal of 173440073 is 370044371.

173440073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 67699984 + 105740089 = 8228^2 + 10283^2 .

It is a cyclic number.

It is not a de Polignac number, because 173440073 - 2⁸ = 173439817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (173440063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26240 + ... + 32177.

It is an arithmetic number, because the mean of its divisors is an integer number (43375365).

Almost surely, 2^173440073 is an apocalyptic number.

It is an amenable number.

173440073 is a deficient number, since it is larger than the sum of its proper divisors (61387).

173440073 is an equidigital number, since it uses as much as digits as its factorization.

173440073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61386.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 173440073 is about 13169.6648780445. The cubic root of 173440073 is about 557.6775338657.

The spelling of 173440073 in words is "one hundred seventy-three million, four hundred forty thousand, seventy-three".