173678161 has 8 divisors (see below), whose sum is σ = 177937760. Its totient is φ = 169428672.

The previous prime is 173678149. The next prime is 173678177. The reversal of 173678161 is 161876371.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 173678161 - 2⁷ = 173678033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173678761) 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 7 ways as a sum of consecutive naturals, for example, 41386 + ... + 45388.

It is an arithmetic number, because the mean of its divisors is an integer number (22242220).

Almost surely, 2^173678161 is an apocalyptic number.

It is an amenable number.

173678161 is a deficient number, since it is larger than the sum of its proper divisors (4259599).

173678161 is a wasteful number, since it uses less digits than its factorization.

173678161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5055.

The product of its digits is 42336, while the sum is 40.

The square root of 173678161 is about 13178.7010361416. The cubic root of 173678161 is about 557.9325991396.

It can be divided in two parts, 1736 and 78161, that added together give a palindrome (79897).

The spelling of 173678161 in words is "one hundred seventy-three million, six hundred seventy-eight thousand, one hundred sixty-one".