671322168 has 160 divisors (see below), whose sum is σ = 2091141360. Its totient is φ = 199480320.

The previous prime is 671322167. The next prime is 671322181. The reversal of 671322168 is 861223176.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671322167) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 376896 + ... + 378672.

Almost surely, 2^671322168 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 671322168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1045570680).

671322168 is an abundant number, since it is smaller than the sum of its proper divisors (1419819192).

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

671322168 is a wasteful number, since it uses less digits than its factorization.

671322168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859 (or 1846 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 671322168 is about 25909.8855265707. The cubic root of 671322168 is about 875.6092270955.

The spelling of 671322168 in words is "six hundred seventy-one million, three hundred twenty-two thousand, one hundred sixty-eight".