671242671 has 72 divisors (see below), whose sum is σ = 1163775600. Its totient is φ = 369223680.

The previous prime is 671242577. The next prime is 671242681. The reversal of 671242671 is 176242176.

It is not a de Polignac number, because 671242671 - 2¹⁰ = 671241647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671242681) 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 71 ways as a sum of consecutive naturals, for example, 829315 + ... + 830123.

It is an arithmetic number, because the mean of its divisors is an integer number (16163550).

Almost surely, 2^671242671 is an apocalyptic number.

671242671 is a deficient number, since it is larger than the sum of its proper divisors (492532929).

671242671 is a wasteful number, since it uses less digits than its factorization.

671242671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889 (or 869 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 671242671 is about 25908.3513755700. The cubic root of 671242671 is about 875.5746629385.

It can be divided in two parts, 671 and 242671, that added together give a palindrome (243342).

The spelling of 671242671 in words is "six hundred seventy-one million, two hundred forty-two thousand, six hundred seventy-one".