726271017 has 4 divisors (see below), whose sum is σ = 968361360. Its totient is φ = 484180676.

The previous prime is 726271003. The next prime is 726271079. The reversal of 726271017 is 710172627.

It is a happy number.

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 726271017 - 2¹² = 726266921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (726271097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121045167 + ... + 121045172.

It is an arithmetic number, because the mean of its divisors is an integer number (242090340).

Almost surely, 2^726271017 is an apocalyptic number.

It is an amenable number.

726271017 is a deficient number, since it is larger than the sum of its proper divisors (242090343).

726271017 is a wasteful number, since it uses less digits than its factorization.

726271017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242090342.

The product of its (nonzero) digits is 8232, while the sum is 33.

The square root of 726271017 is about 26949.4158934846. The cubic root of 726271017 is about 898.8755574568.

The spelling of 726271017 in words is "seven hundred twenty-six million, two hundred seventy-one thousand, seventeen".