671084662771 has 4 divisors (see below), whose sum is σ = 706404908200. Its totient is φ = 635764417344.

The previous prime is 671084662763. The next prime is 671084662813. The reversal of 671084662771 is 177266480176.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 671084662771 - 2³ = 671084662763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671084662711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17660122686 + ... + 17660122723.

It is an arithmetic number, because the mean of its divisors is an integer number (176601227050).

Almost surely, 2^671084662771 is an apocalyptic number.

671084662771 is a deficient number, since it is larger than the sum of its proper divisors (35320245429).

671084662771 is a wasteful number, since it uses less digits than its factorization.

671084662771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35320245428.

The product of its (nonzero) digits is 4741632, while the sum is 55.

The spelling of 671084662771 in words is "six hundred seventy-one billion, eighty-four million, six hundred sixty-two thousand, seven hundred seventy-one".