670171 has 4 divisors (see below), whose sum is σ = 674352. Its totient is φ = 665992.

The previous prime is 670147. The next prime is 670177. The reversal of 670171 is 171076.

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 670171 - 2⁵ = 670139 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670177) 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, 1840 + ... + 2173.

It is an arithmetic number, because the mean of its divisors is an integer number (168588).

2⁶⁷⁰¹⁷¹ is an apocalyptic number.

670171 is a deficient number, since it is larger than the sum of its proper divisors (4181).

670171 is a wasteful number, since it uses less digits than its factorization.

670171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4180.

The product of its (nonzero) digits is 294, while the sum is 22.

The square root of 670171 is about 818.6397253982. The cubic root of 670171 is about 87.5108449143.

It can be divided in two parts, 670 and 171, that added together give a square (841 = 29²).

The spelling of 670171 in words is "six hundred seventy thousand, one hundred seventy-one".