671373 has 6 divisors (see below), whose sum is σ = 969774. Its totient is φ = 447576.

The previous prime is 671369. The next prime is 671383. The reversal of 671373 is 373176.

It can be written as a sum of positive squares in only one way, i.e., 660969 + 10404 = 813^2 + 102^2 .

It is not a de Polignac number, because 671373 - 2² = 671369 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37290 + ... + 37307.

It is an arithmetic number, because the mean of its divisors is an integer number (161629).

2⁶⁷¹³⁷³ is an apocalyptic number.

It is an amenable number.

671373 is a deficient number, since it is larger than the sum of its proper divisors (298401).

671373 is a wasteful number, since it uses less digits than its factorization.

671373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74603 (or 74600 counting only the distinct ones).

The product of its digits is 2646, while the sum is 27.

The square root of 671373 is about 819.3735411886. The cubic root of 671373 is about 87.5631326691.

It can be divided in two parts, 6713 and 73, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 671373 in words is "six hundred seventy-one thousand, three hundred seventy-three".