726006643 has 2 divisors, whose sum is σ = 726006644. Its totient is φ = 726006642.

The previous prime is 726006583. The next prime is 726006679. The reversal of 726006643 is 346600627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 726006643 - 2²¹ = 723909491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 726006599 and 726006608.

It is not a weakly prime, because it can be changed into another prime (726006683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363003321 + 363003322.

It is an arithmetic number, because the mean of its divisors is an integer number (363003322).

Almost surely, 2^726006643 is an apocalyptic number.

726006643 is a deficient number, since it is larger than the sum of its proper divisors (1).

726006643 is an equidigital number, since it uses as much as digits as its factorization.

726006643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 726006643 is about 26944.5104427600. The cubic root of 726006643 is about 898.7664759699.

The spelling of 726006643 in words is "seven hundred twenty-six million, six thousand, six hundred forty-three".