726606626 has 16 divisors (see below), whose sum is σ = 1155656160. Its totient is φ = 341667360.

The previous prime is 726606623. The next prime is 726606649. The reversal of 726606626 is 626606627.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (726606623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64580 + ... + 74991.

It is an arithmetic number, because the mean of its divisors is an integer number (72228510).

Almost surely, 2^726606626 is an apocalyptic number.

726606626 is a deficient number, since it is larger than the sum of its proper divisors (429049534).

726606626 is a wasteful number, since it uses less digits than its factorization.

726606626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139729.

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 726606626 is about 26955.6418213331. The cubic root of 726606626 is about 899.0139925885.

Subtracting from 726606626 its reverse (626606627), we obtain a palindrome (99999999).

The spelling of 726606626 in words is "seven hundred twenty-six million, six hundred six thousand, six hundred twenty-six".