173104681 has 4 divisors (see below), whose sum is σ = 175476052. Its totient is φ = 170733312.

The previous prime is 173104669. The next prime is 173104691. The reversal of 173104681 is 186401371.

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 110061081 + 63043600 = 10491^2 + 7940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-173104681 is a prime.

It is a super-2 number, since 2×173104681² = 59930461168223522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173104621) by changing a digit.

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, 1185576 + ... + 1185721.

It is an arithmetic number, because the mean of its divisors is an integer number (43869013).

Almost surely, 2^173104681 is an apocalyptic number.

It is an amenable number.

173104681 is a deficient number, since it is larger than the sum of its proper divisors (2371371).

173104681 is an equidigital number, since it uses as much as digits as its factorization.

173104681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371370.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 173104681 is about 13156.9252107018. The cubic root of 173104681 is about 557.3178298404.

The spelling of 173104681 in words is "one hundred seventy-three million, one hundred four thousand, six hundred eighty-one".