671909472 has 192 divisors, whose sum is σ = 2129218560. Its totient is φ = 204913152.

The previous prime is 671909453. The next prime is 671909489. The reversal of 671909472 is 274909176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1830633 + ... + 1830999.

It is an arithmetic number, because the mean of its divisors is an integer number (11089680).

Almost surely, 2^671909472 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 671909472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1064609280).

671909472 is an abundant number, since it is smaller than the sum of its proper divisors (1457309088).

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

671909472 is a wasteful number, since it uses less digits than its factorization.

671909472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 671909472 is about 25921.2166381133. The cubic root of 671909472 is about 875.8644939584.

The spelling of 671909472 in words is "six hundred seventy-one million, nine hundred nine thousand, four hundred seventy-two".