671169571 has 12 divisors (see below), whose sum is σ = 717445512. Its totient is φ = 625705344.

The previous prime is 671169563. The next prime is 671169617. The reversal of 671169571 is 175961176.

It is not a de Polignac number, because 671169571 - 2³ = 671169563 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 (671169971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200316 + ... + 203638.

It is an arithmetic number, because the mean of its divisors is an integer number (59787126).

Almost surely, 2^671169571 is an apocalyptic number.

671169571 is a deficient number, since it is larger than the sum of its proper divisors (46275941).

671169571 is a wasteful number, since it uses less digits than its factorization.

671169571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3558 (or 3449 counting only the distinct ones).

The product of its digits is 79380, while the sum is 43.

The square root of 671169571 is about 25906.9405951378. The cubic root of 671169571 is about 875.5428776969.

The spelling of 671169571 in words is "six hundred seventy-one million, one hundred sixty-nine thousand, five hundred seventy-one".