671808382 has 16 divisors (see below), whose sum is σ = 1152522720. Its totient is φ = 287705088.

The previous prime is 671808331. The next prime is 671808419. The reversal of 671808382 is 283808176.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2698 + ... + 36754.

It is an arithmetic number, because the mean of its divisors is an integer number (72032670).

Almost surely, 2^671808382 is an apocalyptic number.

671808382 is a deficient number, since it is larger than the sum of its proper divisors (480714338).

671808382 is a wasteful number, since it uses less digits than its factorization.

671808382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35475.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 671808382 is about 25919.2666177112. The cubic root of 671808382 is about 875.8205666209.

The spelling of 671808382 in words is "six hundred seventy-one million, eight hundred eight thousand, three hundred eighty-two".