673871 has 4 divisors (see below), whose sum is σ = 735144. Its totient is φ = 612600.

The previous prime is 673837. The next prime is 673879. The reversal of 673871 is 178376.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 673871 - 2¹⁸ = 411727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673879) 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, 30620 + ... + 30641.

It is an arithmetic number, because the mean of its divisors is an integer number (183786).

2⁶⁷³⁸⁷¹ is an apocalyptic number.

673871 is a deficient number, since it is larger than the sum of its proper divisors (61273).

673871 is a wasteful number, since it uses less digits than its factorization.

673871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61272.

The product of its digits is 7056, while the sum is 32.

The square root of 673871 is about 820.8964611935. The cubic root of 673871 is about 87.6715979498.

The spelling of 673871 in words is "six hundred seventy-three thousand, eight hundred seventy-one".