671875 has 14 divisors (see below), whose sum is σ = 859364. Its totient is φ = 525000.

The previous prime is 671851. The next prime is 671887. The reversal of 671875 is 578176.

It is not a de Polignac number, because 671875 - 2¹³ = 663683 is a prime.

It is an Ulam number.

It is a Duffinian number.

Its product of digits (11760) is a multiple of the sum of its prime divisors (48).

It is a plaindrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 671875.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 15604 + ... + 15646.

671875 is a Friedman number, since it can be written as 5^7*(7+8/(6-1)), using all its digits and the basic arithmetic operations.

2⁶⁷¹⁸⁷⁵ is an apocalyptic number.

671875 is a deficient number, since it is larger than the sum of its proper divisors (187489).

671875 is an frugal number, since it uses more digits than its factorization.

671875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73 (or 48 counting only the distinct ones).

The product of its digits is 11760, while the sum is 34.

The square root of 671875 is about 819.6798155378. The cubic root of 671875 is about 87.5849515097.

The spelling of 671875 in words is "six hundred seventy-one thousand, eight hundred seventy-five".