172665167 has 6 divisors (see below), whose sum is σ = 176775912. Its totient is φ = 168647892.

The previous prime is 172665161. The next prime is 172665187. The reversal of 172665167 is 761566271.

172665167 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172665167 - 2⁸ = 172664911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172665161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44843 + ... + 48540.

It is an arithmetic number, because the mean of its divisors is an integer number (29462652).

Almost surely, 2^172665167 is an apocalyptic number.

172665167 is a deficient number, since it is larger than the sum of its proper divisors (4110745).

172665167 is an frugal number, since it uses more digits than its factorization.

172665167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93469 (or 93426 counting only the distinct ones).

The product of its digits is 105840, while the sum is 41.

The square root of 172665167 is about 13140.2118323869. The cubic root of 172665167 is about 556.8457521180.

The spelling of 172665167 in words is "one hundred seventy-two million, six hundred sixty-five thousand, one hundred sixty-seven".