671189855 has 16 divisors (see below), whose sum is σ = 920960064. Its totient is φ = 460008960.

The previous prime is 671189843. The next prime is 671189861. The reversal of 671189855 is 558981176.

It is not a de Polignac number, because 671189855 - 2¹⁴ = 671173471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 90695 + ... + 97815.

It is an arithmetic number, because the mean of its divisors is an integer number (57560004).

Almost surely, 2^671189855 is an apocalyptic number.

671189855 is a deficient number, since it is larger than the sum of its proper divisors (249770209).

671189855 is a wasteful number, since it uses less digits than its factorization.

671189855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9826.

The product of its digits is 604800, while the sum is 50.

The square root of 671189855 is about 25907.3320702847. The cubic root of 671189855 is about 875.5516977892.

The spelling of 671189855 in words is "six hundred seventy-one million, one hundred eighty-nine thousand, eight hundred fifty-five".