671000 has 64 divisors (see below), whose sum is σ = 1740960. Its totient is φ = 240000.

The previous prime is 670991. The next prime is 671003. The reversal of 671000 is 176.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10970 + ... + 11030.

2⁶⁷¹⁰⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870480).

671000 is an abundant number, since it is smaller than the sum of its proper divisors (1069960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671000 is a wasteful number, since it uses less digits than its factorization.

671000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 671000 is about 819.1458966509. The cubic root of 671000 is about 87.5469136180.

Adding to 671000 its reverse (176), we get a palindrome (671176).

The spelling of 671000 in words is "six hundred seventy-one thousand".