670671 has 12 divisors (see below), whose sum is σ = 991848. Its totient is φ = 436464.

The previous prime is 670669. The next prime is 670673. The reversal of 670671 is 176076.

It is an interprime number because it is at equal distance from previous prime (670669) and next prime (670673).

It is not a de Polignac number, because 670671 - 2¹ = 670669 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670673) 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 11 ways as a sum of consecutive naturals, for example, 480 + ... + 1253.

It is an arithmetic number, because the mean of its divisors is an integer number (82654).

2⁶⁷⁰⁶⁷¹ is an apocalyptic number.

670671 is a deficient number, since it is larger than the sum of its proper divisors (321177).

670671 is a wasteful number, since it uses less digits than its factorization.

670671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782 (or 1779 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 670671 is about 818.9450531019. The cubic root of 670671 is about 87.5326028166.

The spelling of 670671 in words is "six hundred seventy thousand, six hundred seventy-one".