671609713 has 8 divisors (see below), whose sum is σ = 678407400. Its totient is φ = 664823808.

The previous prime is 671609641. The next prime is 671609717. The reversal of 671609713 is 317906176.

It is a happy number.

671609713 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 25280784 + 646328929 = 5028^2 + 25423^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 671609713 - 2¹⁷ = 671478641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671609717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151395 + ... + 155767.

It is an arithmetic number, because the mean of its divisors is an integer number (84800925).

Almost surely, 2^671609713 is an apocalyptic number.

It is an amenable number.

671609713 is a deficient number, since it is larger than the sum of its proper divisors (6797687).

671609713 is a wasteful number, since it uses less digits than its factorization.

671609713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5891.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 671609713 is about 25915.4338763602. The cubic root of 671609713 is about 875.7342247634.

The spelling of 671609713 in words is "six hundred seventy-one million, six hundred nine thousand, seven hundred thirteen".