727321641 has 8 divisors (see below), whose sum is σ = 969980544. Its totient is φ = 484771920.

The previous prime is 727321619. The next prime is 727321643. The reversal of 727321641 is 146123727.

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

It is not a de Polignac number, because 727321641 - 2⁷ = 727321513 is a prime.

It is a super-3 number, since 3×727321641³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (727321643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10225 + ... + 39486.

It is an arithmetic number, because the mean of its divisors is an integer number (121247568).

Almost surely, 2^727321641 is an apocalyptic number.

It is an amenable number.

727321641 is a deficient number, since it is larger than the sum of its proper divisors (242658903).

727321641 is a wasteful number, since it uses less digits than its factorization.

727321641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54591.

The product of its digits is 14112, while the sum is 33.

The square root of 727321641 is about 26968.9013680572. The cubic root of 727321641 is about 899.3087865576.

The spelling of 727321641 in words is "seven hundred twenty-seven million, three hundred twenty-one thousand, six hundred forty-one".