673612352720 has 20 divisors (see below), whose sum is σ = 1566148720260. Its totient is φ = 269444941056.

The previous prime is 673612352717. The next prime is 673612352729. The reversal of 673612352720 is 27253216376.

It is a happy number.

673612352720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 126403003024 + 547209349696 = 355532^2 + 739736^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673612352729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4210077125 + ... + 4210077284.

It is an arithmetic number, because the mean of its divisors is an integer number (78307436013).

Almost surely, 2^673612352720 is an apocalyptic number.

It is an amenable number.

673612352720 is an abundant number, since it is smaller than the sum of its proper divisors (892536367540).

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

673612352720 is a wasteful number, since it uses less digits than its factorization.

673612352720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8420154422 (or 8420154416 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 44.

The spelling of 673612352720 in words is "six hundred seventy-three billion, six hundred twelve million, three hundred fifty-two thousand, seven hundred twenty".