671715 has 48 divisors (see below), whose sum is σ = 1347840. Its totient is φ = 306240.

The previous prime is 671701. The next prime is 671717. The reversal of 671715 is 517176.

It is not a de Polignac number, because 671715 - 2⁶ = 671651 is a prime.

671715 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (671717) 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 47 ways as a sum of consecutive naturals, for example, 11356 + ... + 11414.

It is an arithmetic number, because the mean of its divisors is an integer number (28080).

2⁶⁷¹⁷¹⁵ is an apocalyptic number.

671715 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671715 is a wasteful number, since it uses less digits than its factorization.

671715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 101 counting only the distinct ones).

The product of its digits is 1470, while the sum is 27.

The square root of 671715 is about 819.5822106415. The cubic root of 671715 is about 87.5779984778.

It can be divided in two parts, 67171 and 5, that added together give a palindrome (67176).

The spelling of 671715 in words is "six hundred seventy-one thousand, seven hundred fifteen".