671289 has 8 divisors (see below), whose sum is σ = 942240. Its totient is φ = 423936.

The previous prime is 671287. The next prime is 671299. The reversal of 671289 is 982176.

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

It is not a de Polignac number, because 671289 - 2¹ = 671287 is a prime.

671289 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (671287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5832 + ... + 5945.

It is an arithmetic number, because the mean of its divisors is an integer number (117780).

2⁶⁷¹²⁸⁹ is an apocalyptic number.

It is an amenable number.

671289 is a deficient number, since it is larger than the sum of its proper divisors (270951).

671289 is a wasteful number, since it uses less digits than its factorization.

671289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11799.

The product of its digits is 6048, while the sum is 33.

The square root of 671289 is about 819.3222809127. The cubic root of 671289 is about 87.5594806456.

The spelling of 671289 in words is "six hundred seventy-one thousand, two hundred eighty-nine".