671147 has 4 divisors (see below), whose sum is σ = 694320. Its totient is φ = 647976.

The previous prime is 671141. The next prime is 671159. The reversal of 671147 is 741176.

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

It is not a de Polignac number, because 671147 - 2⁴ = 671131 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 671147.

It is not an unprimeable number, because it can be changed into a prime (671141) 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, 11543 + ... + 11600.

It is an arithmetic number, because the mean of its divisors is an integer number (173580).

2⁶⁷¹¹⁴⁷ is an apocalyptic number.

671147 is a deficient number, since it is larger than the sum of its proper divisors (23173).

671147 is a wasteful number, since it uses less digits than its factorization.

671147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23172.

The product of its digits is 1176, while the sum is 26.

The square root of 671147 is about 819.2356193428. The cubic root of 671147 is about 87.5533062939.

It can be divided in two parts, 671 and 147, that added together give a palindrome (818).

The spelling of 671147 in words is "six hundred seventy-one thousand, one hundred forty-seven".