726606623 has 2 divisors, whose sum is σ = 726606624. Its totient is φ = 726606622.

The previous prime is 726606583. The next prime is 726606649. The reversal of 726606623 is 326606627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 726606623 - 2¹⁴ = 726590239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726606523) 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, 363303311 + 363303312.

It is an arithmetic number, because the mean of its divisors is an integer number (363303312).

Almost surely, 2^726606623 is an apocalyptic number.

726606623 is a deficient number, since it is larger than the sum of its proper divisors (1).

726606623 is an equidigital number, since it uses as much as digits as its factorization.

726606623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 38.

The square root of 726606623 is about 26955.6417656861. The cubic root of 726606623 is about 899.0139913512.

The spelling of 726606623 in words is "seven hundred twenty-six million, six hundred six thousand, six hundred twenty-three".