671165055 has 64 divisors (see below), whose sum is σ = 1311552000. Its totient is φ = 322940160.

The previous prime is 671165021. The next prime is 671165071. The reversal of 671165055 is 550561176.

It is not a de Polignac number, because 671165055 - 2⁷ = 671164927 is a prime.

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 63 ways as a sum of consecutive naturals, for example, 201796 + ... + 205094.

It is an arithmetic number, because the mean of its divisors is an integer number (20493000).

Almost surely, 2^671165055 is an apocalyptic number.

671165055 is a deficient number, since it is larger than the sum of its proper divisors (640386945).

671165055 is a wasteful number, since it uses less digits than its factorization.

671165055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3461 (or 3455 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 671165055 is about 25906.8534368804. The cubic root of 671165055 is about 875.5409139803.

The spelling of 671165055 in words is "six hundred seventy-one million, one hundred sixty-five thousand, fifty-five".