671973 has 8 divisors (see below), whose sum is σ = 943200. Its totient is φ = 424368.

The previous prime is 671971. The next prime is 671981. The reversal of 671973 is 379176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 671973 - 2¹ = 671971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5838 + ... + 5951.

It is an arithmetic number, because the mean of its divisors is an integer number (117900).

2⁶⁷¹⁹⁷³ is an apocalyptic number.

It is an amenable number.

671973 is a deficient number, since it is larger than the sum of its proper divisors (271227).

671973 is a wasteful number, since it uses less digits than its factorization.

671973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11811.

The product of its digits is 7938, while the sum is 33.

The square root of 671973 is about 819.7395927976. The cubic root of 671973 is about 87.5892096966.

The spelling of 671973 in words is "six hundred seventy-one thousand, nine hundred seventy-three".