726127221 has 8 divisors (see below), whose sum is σ = 968994144. Its totient is φ = 483672560.

The previous prime is 726127217. The next prime is 726127231. The reversal of 726127221 is 122721627.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 726127221 - 2² = 726127217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726127211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98931 + ... + 106016.

It is an arithmetic number, because the mean of its divisors is an integer number (121124268).

Almost surely, 2^726127221 is an apocalyptic number.

It is an amenable number.

726127221 is a deficient number, since it is larger than the sum of its proper divisors (242866923).

726127221 is a wasteful number, since it uses less digits than its factorization.

726127221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206131.

The product of its digits is 4704, while the sum is 30.

The square root of 726127221 is about 26946.7478742797. The cubic root of 726127221 is about 898.8162300900.

Adding to 726127221 its reverse (122721627), we get a palindrome (848848848).

The spelling of 726127221 in words is "seven hundred twenty-six million, one hundred twenty-seven thousand, two hundred twenty-one".