671309216 has 48 divisors (see below), whose sum is σ = 1436117760. Its totient is φ = 307722240.

The previous prime is 671309213. The next prime is 671309227. The reversal of 671309216 is 612903176.

It is not an unprimeable number, because it can be changed into a prime (671309213) by changing a digit.

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, 1040 + ... + 36656.

It is an arithmetic number, because the mean of its divisors is an integer number (29919120).

Almost surely, 2^671309216 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 671309216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (718058880).

671309216 is an abundant number, since it is smaller than the sum of its proper divisors (764808544).

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

671309216 is a wasteful number, since it uses less digits than its factorization.

671309216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35677 (or 35669 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 671309216 is about 25909.6355821536. The cubic root of 671309216 is about 875.6035959375.

The spelling of 671309216 in words is "six hundred seventy-one million, three hundred nine thousand, two hundred sixteen".