671819344 has 20 divisors (see below), whose sum is σ = 1487600224. Its totient is φ = 287922528.

The previous prime is 671819341. The next prime is 671819411. The reversal of 671819344 is 443918176.

It is a self number, because there is not a number n which added to its sum of digits gives 671819344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671819341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2999082 + ... + 2999305.

Almost surely, 2^671819344 is an apocalyptic number.

It is an amenable number.

671819344 is an abundant number, since it is smaller than the sum of its proper divisors (815780880).

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

671819344 is a wasteful number, since it uses less digits than its factorization.

671819344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5998402 (or 5998396 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 671819344 is about 25919.4780811651. The cubic root of 671819344 is about 875.8253302276.

It can be divided in two parts, 6718 and 19344, that added together give a palindrome (26062).

The spelling of 671819344 in words is "six hundred seventy-one million, eight hundred nineteen thousand, three hundred forty-four".