671218488 has 96 divisors (see below), whose sum is σ = 1896039600. Its totient is φ = 222455808.

The previous prime is 671218481. The next prime is 671218501. The reversal of 671218488 is 884812176.

It is a super-2 number, since 2×671218488² = 901068517266012288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671218481) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 374298 + ... + 376086.

Almost surely, 2^671218488 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 671218488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (948019800).

671218488 is an abundant number, since it is smaller than the sum of its proper divisors (1224821112).

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

671218488 is a wasteful number, since it uses less digits than its factorization.

671218488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003 (or 1987 counting only the distinct ones).

The product of its digits is 172032, while the sum is 45.

The square root of 671218488 is about 25907.8846685715. The cubic root of 671218488 is about 875.5641479751.

It can be divided in two parts, 6712 and 18488, that added together give a triangular number (25200 = T₂₂₄).

The spelling of 671218488 in words is "six hundred seventy-one million, two hundred eighteen thousand, four hundred eighty-eight".