722938461605 has 8 divisors (see below), whose sum is σ = 888685328664. Its totient is φ = 564244652800.

The previous prime is 722938461577. The next prime is 722938461643. The reversal of 722938461605 is 506164839227.

It can be written as a sum of positive squares in 4 ways, for example, as 78794174209 + 644144287396 = 280703^2 + 802586^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 722938461605 - 2¹² = 722938457509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1763264336 + ... + 1763264745.

It is an arithmetic number, because the mean of its divisors is an integer number (111085666083).

It is a 2-persistent number, because it is pandigital, and so is 2⋅722938461605 = 1445876923210, but 3⋅722938461605 = 2168815384815 is not.

Almost surely, 2^722938461605 is an apocalyptic number.

It is an amenable number.

722938461605 is a deficient number, since it is larger than the sum of its proper divisors (165746867059).

722938461605 is a wasteful number, since it uses less digits than its factorization.

722938461605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3526529127.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 722938461605 in words is "seven hundred twenty-two billion, nine hundred thirty-eight million, four hundred sixty-one thousand, six hundred five".