671135 has 4 divisors (see below), whose sum is σ = 805368. Its totient is φ = 536904.

The previous prime is 671131. The next prime is 671141. The reversal of 671135 is 531176.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 671135 - 2² = 671131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 671135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671131) 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 3 ways as a sum of consecutive naturals, for example, 67109 + ... + 67118.

It is an arithmetic number, because the mean of its divisors is an integer number (201342).

2⁶⁷¹¹³⁵ is an apocalyptic number.

671135 is a deficient number, since it is larger than the sum of its proper divisors (134233).

671135 is a wasteful number, since it uses less digits than its factorization.

671135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134232.

The product of its digits is 630, while the sum is 23.

The square root of 671135 is about 819.2282954098. The cubic root of 671135 is about 87.5527844778.

The spelling of 671135 in words is "six hundred seventy-one thousand, one hundred thirty-five".