726230745064 has 96 divisors (see below), whose sum is σ = 1614671460360. Its totient is φ = 304824565760.

The previous prime is 726230745059. The next prime is 726230745091. The reversal of 726230745064 is 460547032627.

It can be written as a sum of positive squares in 4 ways, for example, as 716477602500 + 9753142564 = 846450^2 + 98758^2 .

It is a super-2 number, since 2×726230745064² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 455832 + ... + 1288504.

Almost surely, 2^726230745064 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 726230745064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (807335730180).

726230745064 is an abundant number, since it is smaller than the sum of its proper divisors (888440715296).

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

726230745064 is a wasteful number, since it uses less digits than its factorization.

726230745064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832771 (or 832756 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 46.

The spelling of 726230745064 in words is "seven hundred twenty-six billion, two hundred thirty million, seven hundred forty-five thousand, sixty-four".