671305459 has 12 divisors (see below), whose sum is σ = 739698120. Its totient is φ = 608775200.

The previous prime is 671305441. The next prime is 671305477. The reversal of 671305459 is 954503176.

It is an interprime number because it is at equal distance from previous prime (671305441) and next prime (671305477).

It is not a de Polignac number, because 671305459 - 2⁹ = 671304947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671305429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44079 + ... + 57319.

It is an arithmetic number, because the mean of its divisors is an integer number (61641510).

Almost surely, 2^671305459 is an apocalyptic number.

671305459 is a deficient number, since it is larger than the sum of its proper divisors (68392661).

671305459 is a wasteful number, since it uses less digits than its factorization.

671305459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13682 (or 13671 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 671305459 is about 25909.5630800676. The cubic root of 671305459 is about 875.6019624881.

The spelling of 671305459 in words is "six hundred seventy-one million, three hundred five thousand, four hundred fifty-nine".