671004 has 60 divisors (see below), whose sum is σ = 1863400. Its totient is φ = 209952.

The previous prime is 671003. The next prime is 671017. The reversal of 671004 is 400176.

671004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 19 ways as a sum of consecutive naturals, for example, 6102 + ... + 6210.

2⁶⁷¹⁰⁰⁴ 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 671004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (931700).

671004 is an abundant number, since it is smaller than the sum of its proper divisors (1192396).

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

671004 is a wasteful number, since it uses less digits than its factorization.

671004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 671004 is about 819.1483382148. The cubic root of 671004 is about 87.5470875807.

The spelling of 671004 in words is "six hundred seventy-one thousand, four".