671919712 has 12 divisors (see below), whose sum is σ = 1322841996. Its totient is φ = 335959840.

The previous prime is 671919701. The next prime is 671919749. The reversal of 671919712 is 217919176.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10498714 + ... + 10498777.

It is an arithmetic number, because the mean of its divisors is an integer number (110236833).

Almost surely, 2^671919712 is an apocalyptic number.

It is an amenable number.

671919712 is a deficient number, since it is larger than the sum of its proper divisors (650922284).

671919712 is a wasteful number, since it uses less digits than its factorization.

671919712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20997501 (or 20997493 counting only the distinct ones).

The product of its digits is 47628, while the sum is 43.

The square root of 671919712 is about 25921.4141589536. The cubic root of 671919712 is about 875.8689433707.

The spelling of 671919712 in words is "six hundred seventy-one million, nine hundred nineteen thousand, seven hundred twelve".