671516143 has 8 divisors (see below), whose sum is σ = 683779712. Its totient is φ = 659318616.

The previous prime is 671516129. The next prime is 671516171. The reversal of 671516143 is 341615176.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671516143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 671516099 and 671516108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671516543) 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, 4246 + ... + 36892.

It is an arithmetic number, because the mean of its divisors is an integer number (85472464).

Almost surely, 2^671516143 is an apocalyptic number.

671516143 is a deficient number, since it is larger than the sum of its proper divisors (12263569).

671516143 is a wasteful number, since it uses less digits than its factorization.

671516143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33021.

The product of its digits is 15120, while the sum is 34.

The square root of 671516143 is about 25913.6285186000. The cubic root of 671516143 is about 875.6935531970.

The spelling of 671516143 in words is "six hundred seventy-one million, five hundred sixteen thousand, one hundred forty-three".