726690589213 has 2 divisors, whose sum is σ = 726690589214. Its totient is φ = 726690589212.

The previous prime is 726690589211. The next prime is 726690589237. The reversal of 726690589213 is 312985096627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 388224947929 + 338465641284 = 623077^2 + 581778^2 .

It is a cyclic number.

It is not a de Polignac number, because 726690589213 - 2¹ = 726690589211 is a prime.

It is a super-2 number, since 2×726690589213² (a number of 25 digits) contains 22 as substring.

Together with 726690589211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726690589211) 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 as a sum of consecutive naturals, namely, 363345294606 + 363345294607.

It is an arithmetic number, because the mean of its divisors is an integer number (363345294607).

Almost surely, 2^726690589213 is an apocalyptic number.

It is an amenable number.

726690589213 is a deficient number, since it is larger than the sum of its proper divisors (1).

726690589213 is an equidigital number, since it uses as much as digits as its factorization.

726690589213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 726690589213 in words is "seven hundred twenty-six billion, six hundred ninety million, five hundred eighty-nine thousand, two hundred thirteen".