171872667 has 12 divisors (see below), whose sum is σ = 248446224. Its totient is φ = 114496080.

The previous prime is 171872663. The next prime is 171872681. The reversal of 171872667 is 766278171.

It is not a de Polignac number, because 171872667 - 2² = 171872663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (171872663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7042 + ... + 19832.

It is an arithmetic number, because the mean of its divisors is an integer number (20703852).

Almost surely, 2^171872667 is an apocalyptic number.

171872667 is a deficient number, since it is larger than the sum of its proper divisors (76573557).

171872667 is a wasteful number, since it uses less digits than its factorization.

171872667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14290 (or 14287 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 171872667 is about 13110.0216246961. The cubic root of 171872667 is about 555.9925069725.

The spelling of 171872667 in words is "one hundred seventy-one million, eight hundred seventy-two thousand, six hundred sixty-seven".