659671 has 2 divisors, whose sum is σ = 659672. Its totient is φ = 659670.

The previous prime is 659669. The next prime is 659689. The reversal of 659671 is 176956.

659671 is nontrivially palindromic in base 7.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 659671 - 2¹ = 659669 is a prime.

Together with 659669, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (659611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329835 + 329836.

It is an arithmetic number, because the mean of its divisors is an integer number (329836).

2⁶⁵⁹⁶⁷¹ is an apocalyptic number.

659671 is a deficient number, since it is larger than the sum of its proper divisors (1).

659671 is an equidigital number, since it uses as much as digits as its factorization.

659671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 34.

The square root of 659671 is about 812.2013297207. The cubic root of 659671 is about 87.0514075004.

The spelling of 659671 in words is "six hundred fifty-nine thousand, six hundred seventy-one".