671592672 has 144 divisors (see below), whose sum is σ = 1990759680. Its totient is φ = 214502400.

The previous prime is 671592653. The next prime is 671592673. The reversal of 671592672 is 276295176.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671592673) 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 23 ways as a sum of consecutive naturals, for example, 1595022 + ... + 1595442.

It is an arithmetic number, because the mean of its divisors is an integer number (13824720).

Almost surely, 2^671592672 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 671592672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (995379840).

671592672 is an abundant number, since it is smaller than the sum of its proper divisors (1319167008).

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

671592672 is a wasteful number, since it uses less digits than its factorization.

671592672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 646 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 671592672 is about 25915.1050933621. The cubic root of 671592672 is about 875.7268179253.

The spelling of 671592672 in words is "six hundred seventy-one million, five hundred ninety-two thousand, six hundred seventy-two".