726168241 has 4 divisors (see below), whose sum is σ = 727557232. Its totient is φ = 724779252.

The previous prime is 726168227. The next prime is 726168257. The reversal of 726168241 is 142861627.

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 a de Polignac number, because none of the positive numbers 2^k-726168241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 726168241.

It is not an unprimeable number, because it can be changed into a prime (726168341) 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, 693711 + ... + 694756.

It is an arithmetic number, because the mean of its divisors is an integer number (181889308).

Almost surely, 2^726168241 is an apocalyptic number.

It is an amenable number.

726168241 is a deficient number, since it is larger than the sum of its proper divisors (1388991).

726168241 is a wasteful number, since it uses less digits than its factorization.

726168241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388990.

The product of its digits is 32256, while the sum is 37.

The square root of 726168241 is about 26947.5089943393. The cubic root of 726168241 is about 898.8331549237.

The spelling of 726168241 in words is "seven hundred twenty-six million, one hundred sixty-eight thousand, two hundred forty-one".