173107681 has 4 divisors (see below), whose sum is σ = 174353200. Its totient is φ = 171862164.

The previous prime is 173107673. The next prime is 173107709. The reversal of 173107681 is 186701371.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 173107681 - 2³ = 173107673 is a prime.

It is a super-2 number, since 2×173107681² = 59932538442395522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173107621) 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, 622551 + ... + 622828.

It is an arithmetic number, because the mean of its divisors is an integer number (43588300).

Almost surely, 2^173107681 is an apocalyptic number.

It is an amenable number.

173107681 is a deficient number, since it is larger than the sum of its proper divisors (1245519).

173107681 is a wasteful number, since it uses less digits than its factorization.

173107681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245518.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 173107681 is about 13157.0392186084. The cubic root of 173107681 is about 557.3210493640.

The spelling of 173107681 in words is "one hundred seventy-three million, one hundred seven thousand, six hundred eighty-one".