397671 has 8 divisors (see below), whose sum is σ = 537984. Its totient is φ = 261240.

The previous prime is 397643. The next prime is 397673. The reversal of 397671 is 176793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 397671 - 2⁷ = 397543 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 3³ + 9 + 6⁷ + 7² + 7⁶ + 1 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721 + ... + 1146.

It is an arithmetic number, because the mean of its divisors is an integer number (67248).

2³⁹⁷⁶⁷¹ is an apocalyptic number.

397671 is a deficient number, since it is larger than the sum of its proper divisors (140313).

397671 is a wasteful number, since it uses less digits than its factorization.

397671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941.

The product of its digits is 7938, while the sum is 33.

The square root of 397671 is about 630.6116078856. The cubic root of 397671 is about 73.5373497062.

The spelling of 397671 in words is "three hundred ninety-seven thousand, six hundred seventy-one".