671717143 has 8 divisors (see below), whose sum is σ = 688777712. Its totient is φ = 654863616.

The previous prime is 671717113. The next prime is 671717149. The reversal of 671717143 is 341717176.

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 671717143 - 2²¹ = 669619991 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 (671717149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45180 + ... + 58177.

It is an arithmetic number, because the mean of its divisors is an integer number (86097214).

Almost surely, 2^671717143 is an apocalyptic number.

671717143 is a deficient number, since it is larger than the sum of its proper divisors (17060569).

671717143 is a wasteful number, since it uses less digits than its factorization.

671717143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103521.

The product of its digits is 24696, while the sum is 37.

The square root of 671717143 is about 25917.5064965749. The cubic root of 671717143 is about 875.7809161230.

The spelling of 671717143 in words is "six hundred seventy-one million, seven hundred seventeen thousand, one hundred forty-three".