726804726663 has 8 divisors (see below), whose sum is σ = 969156005488. Its totient is φ = 484494966144.

The previous prime is 726804726619. The next prime is 726804726677. The reversal of 726804726663 is 366627408627.

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

It is not a de Polignac number, because 726804726663 - 2¹⁰ = 726804725639 is a prime.

It is a super-2 number, since 2×726804726663² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726804724663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10338706 + ... + 10408767.

It is an arithmetic number, because the mean of its divisors is an integer number (121144500686).

Almost surely, 2^726804726663 is an apocalyptic number.

726804726663 is a deficient number, since it is larger than the sum of its proper divisors (242351278825).

726804726663 is a wasteful number, since it uses less digits than its factorization.

726804726663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20759153.

The product of its (nonzero) digits is 24385536, while the sum is 57.

The spelling of 726804726663 in words is "seven hundred twenty-six billion, eight hundred four million, seven hundred twenty-six thousand, six hundred sixty-three".