672640608 has 96 divisors (see below), whose sum is σ = 1797943392. Its totient is φ = 220160000.

The previous prime is 672640597. The next prime is 672640621. The reversal of 672640608 is 806046276.

It is a tau number, because it is divible by the number of its divisors (96).

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 15 ways as a sum of consecutive naturals, for example, 1677208 + ... + 1677608.

It is an arithmetic number, because the mean of its divisors is an integer number (18728577).

Almost surely, 2^672640608 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 672640608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (898971696).

672640608 is an abundant number, since it is smaller than the sum of its proper divisors (1125302784).

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

672640608 is a wasteful number, since it uses less digits than its factorization.

672640608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688 (or 680 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 672640608 is about 25935.3158453873. The cubic root of 672640608 is about 876.1820684508.

The spelling of 672640608 in words is "six hundred seventy-two million, six hundred forty thousand, six hundred eight".