726690654709 has 2 divisors, whose sum is σ = 726690654710. Its totient is φ = 726690654708.

The previous prime is 726690654707. The next prime is 726690654721. The reversal of 726690654709 is 907456096627.

726690654709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 394572422500 + 332118232209 = 628150^2 + 576297^2 .

It is a cyclic number.

It is not a de Polignac number, because 726690654709 - 2¹ = 726690654707 is a prime.

Together with 726690654707, 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 (726690654707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363345327354 + 363345327355.

It is an arithmetic number, because the mean of its divisors is an integer number (363345327355).

Almost surely, 2^726690654709 is an apocalyptic number.

It is an amenable number.

726690654709 is a deficient number, since it is larger than the sum of its proper divisors (1).

726690654709 is an equidigital number, since it uses as much as digits as its factorization.

726690654709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34292160, while the sum is 61.

The spelling of 726690654709 in words is "seven hundred twenty-six billion, six hundred ninety million, six hundred fifty-four thousand, seven hundred nine".