671041660 has 48 divisors (see below), whose sum is σ = 1451108736. Its totient is φ = 260511552.

The previous prime is 671041627. The next prime is 671041667. The reversal of 671041660 is 66140176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671041667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137787 + ... + 142573.

It is an arithmetic number, because the mean of its divisors is an integer number (30231432).

Almost surely, 2^671041660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671041660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725554368).

671041660 is an abundant number, since it is smaller than the sum of its proper divisors (780067076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671041660 is a wasteful number, since it uses less digits than its factorization.

671041660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5002 (or 5000 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 671041660 is about 25904.4718147273. The cubic root of 671041660 is about 875.4872540586.

The spelling of 671041660 in words is "six hundred seventy-one million, forty-one thousand, six hundred sixty".