671197 has 4 divisors (see below), whose sum is σ = 673056. Its totient is φ = 669340.

The previous prime is 671189. The next prime is 671201. The reversal of 671197 is 791176.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 671197 - 2³ = 671189 is a prime.

It is a Smith number, since the sum of its digits (31) 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193 + ... + 1174.

It is an arithmetic number, because the mean of its divisors is an integer number (168264).

2⁶⁷¹¹⁹⁷ is an apocalyptic number.

It is an amenable number.

671197 is a deficient number, since it is larger than the sum of its proper divisors (1859).

671197 is a wasteful number, since it uses less digits than its factorization.

671197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858.

The product of its digits is 2646, while the sum is 31.

The square root of 671197 is about 819.2661350257. The cubic root of 671197 is about 87.5554804607. Note that the first 3 decimals are identical.

It can be divided in two parts, 671 and 197, that added together give a palindrome (868).

The spelling of 671197 in words is "six hundred seventy-one thousand, one hundred ninety-seven".