727441621 has 8 divisors (see below), whose sum is σ = 756977760. Its totient is φ = 698479152.

The previous prime is 727441613. The next prime is 727441711. The reversal of 727441621 is 126144727.

It is a happy number.

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 727441621 - 2³ = 727441613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (727441601) 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, 140830 + ... + 145903.

It is an arithmetic number, because the mean of its divisors is an integer number (94622220).

Almost surely, 2^727441621 is an apocalyptic number.

It is an amenable number.

727441621 is a deficient number, since it is larger than the sum of its proper divisors (29536139).

727441621 is a wasteful number, since it uses less digits than its factorization.

727441621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286835.

The product of its digits is 18816, while the sum is 34.

The square root of 727441621 is about 26971.1256902637. The cubic root of 727441621 is about 899.3582342525.

The spelling of 727441621 in words is "seven hundred twenty-seven million, four hundred forty-one thousand, six hundred twenty-one".