726816947 has 4 divisors (see below), whose sum is σ = 726877536. Its totient is φ = 726756360.

The previous prime is 726816901. The next prime is 726816949. The reversal of 726816947 is 749618627.

726816947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 726816947 - 2¹⁰ = 726815923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 726816895 and 726816904.

It is not an unprimeable number, because it can be changed into a prime (726816949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5579 + ... + 38532.

It is an arithmetic number, because the mean of its divisors is an integer number (181719384).

Almost surely, 2^726816947 is an apocalyptic number.

726816947 is a deficient number, since it is larger than the sum of its proper divisors (60589).

726816947 is a wasteful number, since it uses less digits than its factorization.

726816947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60588.

The product of its digits is 1016064, while the sum is 50.

The square root of 726816947 is about 26959.5427817313. The cubic root of 726816947 is about 899.1007260306.

The spelling of 726816947 in words is "seven hundred twenty-six million, eight hundred sixteen thousand, nine hundred forty-seven".