671328384 has 128 divisors (see below), whose sum is σ = 1846363200. Its totient is φ = 215986176.

The previous prime is 671328331. The next prime is 671328421. The reversal of 671328384 is 483823176.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1799622 + ... + 1799994.

Almost surely, 2^671328384 is an apocalyptic number.

671328384 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671328384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (923181600).

671328384 is an abundant number, since it is smaller than the sum of its proper divisors (1175034816).

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

671328384 is a wasteful number, since it uses less digits than its factorization.

671328384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 530 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 671328384 is about 25910.0054805089. The cubic root of 671328384 is about 875.6119296083.

The spelling of 671328384 in words is "six hundred seventy-one million, three hundred twenty-eight thousand, three hundred eighty-four".