671338812 has 24 divisors (see below), whose sum is σ = 1634564736. Its totient is φ = 214049968.

The previous prime is 671338793. The next prime is 671338813. The reversal of 671338812 is 218833176.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671338813) 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, 1215918 + ... + 1216469.

It is an arithmetic number, because the mean of its divisors is an integer number (68106864).

Almost surely, 2^671338812 is an apocalyptic number.

It is an amenable number.

671338812 is an abundant number, since it is smaller than the sum of its proper divisors (963225924).

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

671338812 is a wasteful number, since it uses less digits than its factorization.

671338812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2432417 (or 2432415 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 671338812 is about 25910.2067147292. The cubic root of 671338812 is about 875.6164633229.

The spelling of 671338812 in words is "six hundred seventy-one million, three hundred thirty-eight thousand, eight hundred twelve".