671885171 has 8 divisors (see below), whose sum is σ = 689536224. Its totient is φ = 654448320.

The previous prime is 671885161. The next prime is 671885189. The reversal of 671885171 is 171588176.

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 671885171 - 2⁶ = 671885107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671885161) 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, 47186 + ... + 59751.

It is an arithmetic number, because the mean of its divisors is an integer number (86192028).

Almost surely, 2^671885171 is an apocalyptic number.

671885171 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

671885171 is a deficient number, since it is larger than the sum of its proper divisors (17651053).

671885171 is a wasteful number, since it uses less digits than its factorization.

671885171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107101.

The product of its digits is 94080, while the sum is 44.

The square root of 671885171 is about 25920.7478865869. The cubic root of 671885171 is about 875.8539346789.

The spelling of 671885171 in words is "six hundred seventy-one million, eight hundred eighty-five thousand, one hundred seventy-one".