726262217 has 4 divisors (see below), whose sum is σ = 743152080. Its totient is φ = 709372356.

The previous prime is 726262193. The next prime is 726262261. The reversal of 726262217 is 712262627.

726262217 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 Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 726262217 - 2¹² = 726258121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726262717) 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, 8444867 + ... + 8444952.

It is an arithmetic number, because the mean of its divisors is an integer number (185788020).

Almost surely, 2^726262217 is an apocalyptic number.

It is an amenable number.

726262217 is a deficient number, since it is larger than the sum of its proper divisors (16889863).

726262217 is a wasteful number, since it uses less digits than its factorization.

726262217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16889862.

The product of its digits is 28224, while the sum is 35.

The square root of 726262217 is about 26949.2526241453. The cubic root of 726262217 is about 898.8719269769.

The spelling of 726262217 in words is "seven hundred twenty-six million, two hundred sixty-two thousand, two hundred seventeen".