671771984 has 40 divisors (see below), whose sum is σ = 1446907392. Its totient is φ = 300044160.

The previous prime is 671771959. The next prime is 671772019. The reversal of 671771984 is 489177176.

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 in 7 ways as a sum of consecutive naturals, for example, 45644 + ... + 58539.

Almost surely, 2^671771984 is an apocalyptic number.

It is an amenable number.

671771984 is an abundant number, since it is smaller than the sum of its proper divisors (775135408).

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

671771984 is a wasteful number, since it uses less digits than its factorization.

671771984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104235 (or 104229 counting only the distinct ones).

The product of its digits is 592704, while the sum is 50.

The square root of 671771984 is about 25918.5644664206. The cubic root of 671771984 is about 875.8047492670.

The spelling of 671771984 in words is "six hundred seventy-one million, seven hundred seventy-one thousand, nine hundred eighty-four".