671587543 has 4 divisors (see below), whose sum is σ = 732640968. Its totient is φ = 610534120.

The previous prime is 671587541. The next prime is 671587561. The reversal of 671587543 is 345785176.

671587543 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.

It is a cyclic number.

It is not a de Polignac number, because 671587543 - 2¹ = 671587541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 671587493 and 671587502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671587541) 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, 30526696 + ... + 30526717.

It is an arithmetic number, because the mean of its divisors is an integer number (183160242).

Almost surely, 2^671587543 is an apocalyptic number.

671587543 is a deficient number, since it is larger than the sum of its proper divisors (61053425).

671587543 is a wasteful number, since it uses less digits than its factorization.

671587543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61053424.

The product of its digits is 705600, while the sum is 46.

The square root of 671587543 is about 25915.0061354421. The cubic root of 671587543 is about 875.7245885908.

The spelling of 671587543 in words is "six hundred seventy-one million, five hundred eighty-seven thousand, five hundred forty-three".