671274368 has 64 divisors (see below), whose sum is σ = 1394442000. Its totient is φ = 321484800.

The previous prime is 671274361. The next prime is 671274379. The reversal of 671274368 is 863472176.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671274361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515318 + ... + 516618.

Almost surely, 2^671274368 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 671274368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (697221000).

671274368 is an abundant number, since it is smaller than the sum of its proper divisors (723167632).

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

671274368 is a wasteful number, since it uses less digits than its factorization.

671274368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483 (or 1471 counting only the distinct ones).

The product of its digits is 338688, while the sum is 44.

The square root of 671274368 is about 25908.9630823003. The cubic root of 671274368 is about 875.5884446672.

The spelling of 671274368 in words is "six hundred seventy-one million, two hundred seventy-four thousand, three hundred sixty-eight".