726666244 has 12 divisors (see below), whose sum is σ = 1272066768. Its totient is φ = 363218600.

The previous prime is 726666203. The next prime is 726666263. The reversal of 726666244 is 442666627.

It is a self number, because there is not a number n which added to its sum of digits gives 726666244.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13462 + ... + 40429.

It is an arithmetic number, because the mean of its divisors is an integer number (106005564).

Almost surely, 2^726666244 is an apocalyptic number.

It is an amenable number.

726666244 is a deficient number, since it is larger than the sum of its proper divisors (545400524).

726666244 is a wasteful number, since it uses less digits than its factorization.

726666244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57266 (or 57264 counting only the distinct ones).

The product of its digits is 580608, while the sum is 43.

The square root of 726666244 is about 26956.7476524895. The cubic root of 726666244 is about 899.0385799183.

The spelling of 726666244 in words is "seven hundred twenty-six million, six hundred sixty-six thousand, two hundred forty-four".