671706359 has 4 divisors (see below), whose sum is σ = 671763840. Its totient is φ = 671648880.

The previous prime is 671706353. The next prime is 671706377. The reversal of 671706359 is 953607176.

671706359 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 671706359 - 2²⁰ = 670657783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671706353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4262 + ... + 36899.

It is an arithmetic number, because the mean of its divisors is an integer number (167940960).

Almost surely, 2^671706359 is an apocalyptic number.

671706359 is a deficient number, since it is larger than the sum of its proper divisors (57481).

671706359 is a wasteful number, since it uses less digits than its factorization.

671706359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57480.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 671706359 is about 25917.2984510346. The cubic root of 671706359 is about 875.7762293924.

The spelling of 671706359 in words is "six hundred seventy-one million, seven hundred six thousand, three hundred fifty-nine".