672171 has 4 divisors (see below), whose sum is σ = 896232. Its totient is φ = 448112.

The previous prime is 672169. The next prime is 672181. The reversal of 672171 is 171276.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 672171 - 2¹ = 672169 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (672131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112026 + ... + 112031.

It is an arithmetic number, because the mean of its divisors is an integer number (224058).

2⁶⁷²¹⁷¹ is an apocalyptic number.

672171 is a deficient number, since it is larger than the sum of its proper divisors (224061).

672171 is a wasteful number, since it uses less digits than its factorization.

672171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224060.

The product of its digits is 588, while the sum is 24.

The square root of 672171 is about 819.8603539628. The cubic root of 672171 is about 87.5978117091.

The spelling of 672171 in words is "six hundred seventy-two thousand, one hundred seventy-one".