671859486 has 24 divisors (see below), whose sum is σ = 1518987600. Its totient is φ = 214215936.

The previous prime is 671859473. The next prime is 671859493. The reversal of 671859486 is 684958176.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 811011 + ... + 811838.

It is an arithmetic number, because the mean of its divisors is an integer number (63291150).

Almost surely, 2^671859486 is an apocalyptic number.

671859486 is an abundant number, since it is smaller than the sum of its proper divisors (847128114).

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

671859486 is a wasteful number, since it uses less digits than its factorization.

671859486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622880 (or 1622877 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 671859486 is about 25920.2524293264. The cubic root of 671859486 is about 875.8427737465.

The spelling of 671859486 in words is "six hundred seventy-one million, eight hundred fifty-nine thousand, four hundred eighty-six".