671732 has 12 divisors (see below), whose sum is σ = 1195236. Its totient is φ = 330240.

The previous prime is 671729. The next prime is 671743. The reversal of 671732 is 237176.

It can be written as a sum of positive squares in 2 ways, for example, as 306916 + 364816 = 554^2 + 604^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 9.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 671732.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1133 + ... + 1620.

It is an arithmetic number, because the mean of its divisors is an integer number (99603).

2⁶⁷¹⁷³² is an apocalyptic number.

It is an amenable number.

671732 is a deficient number, since it is larger than the sum of its proper divisors (523504).

671732 is a wasteful number, since it uses less digits than its factorization.

671732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818 (or 2816 counting only the distinct ones).

The product of its digits is 1764, while the sum is 26.

The square root of 671732 is about 819.5925817136. The cubic root of 671732 is about 87.5787372899.

The spelling of 671732 in words is "six hundred seventy-one thousand, seven hundred thirty-two".