727221 has 8 divisors (see below), whose sum is σ = 1057824. Its totient is φ = 440720.

The previous prime is 727211. The next prime is 727241. The reversal of 727221 is 122727.

727221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 727221 - 2⁵ = 727189 is a prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 727221.

It is not an unprimeable number, because it can be changed into a prime (727201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10986 + ... + 11051.

It is an arithmetic number, because the mean of its divisors is an integer number (132228).

2⁷²⁷²²¹ is an apocalyptic number.

It is an amenable number.

727221 is a deficient number, since it is larger than the sum of its proper divisors (330603).

727221 is a wasteful number, since it uses less digits than its factorization.

727221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22051.

The product of its digits is 392, while the sum is 21.

The square root of 727221 is about 852.7725370813. The cubic root of 727221 is about 89.9267304905.

Adding to 727221 its reverse (122727), we get a palindrome (849948).

The spelling of 727221 in words is "seven hundred twenty-seven thousand, two hundred twenty-one", and thus it is an iban number.