671735 has 8 divisors (see below), whose sum is σ = 828096. Its totient is φ = 522720.

The previous prime is 671729. The next prime is 671743. The reversal of 671735 is 537176.

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

It is not a de Polignac number, because 671735 - 2¹⁰ = 670711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 671698 and 671707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1631 + ... + 2000.

It is an arithmetic number, because the mean of its divisors is an integer number (103512).

2⁶⁷¹⁷³⁵ is an apocalyptic number.

671735 is a deficient number, since it is larger than the sum of its proper divisors (156361).

671735 is a wasteful number, since it uses less digits than its factorization.

671735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673.

The product of its digits is 4410, while the sum is 29.

The square root of 671735 is about 819.5944118892. The cubic root of 671735 is about 87.5788676672.

The spelling of 671735 in words is "six hundred seventy-one thousand, seven hundred thirty-five".