671733 has 10 divisors (see below), whose sum is σ = 1003574. Its totient is φ = 447768.

The previous prime is 671729. The next prime is 671743. The reversal of 671733 is 337176.

It can be written as a sum of positive squares in only one way, i.e., 492804 + 178929 = 702^2 + 423^2 .

It is not a de Polignac number, because 671733 - 2² = 671729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 671697 and 671706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671743) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4066 + ... + 4227.

2⁶⁷¹⁷³³ is an apocalyptic number.

It is an amenable number.

671733 is a deficient number, since it is larger than the sum of its proper divisors (331841).

671733 is an equidigital number, since it uses as much as digits as its factorization.

671733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8305 (or 8296 counting only the distinct ones).

The product of its digits is 2646, while the sum is 27.

The square root of 671733 is about 819.5931917726. The cubic root of 671733 is about 87.5787807490.

It can be divided in two parts, 67173 and 3, that added together give a palindrome (67176).

The spelling of 671733 in words is "six hundred seventy-one thousand, seven hundred thirty-three".