727611641 has 2 divisors, whose sum is σ = 727611642. Its totient is φ = 727611640.

The previous prime is 727611637. The next prime is 727611649. The reversal of 727611641 is 146116727.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 619014400 + 108597241 = 24880^2 + 10421^2 .

It is a cyclic number.

It is not a de Polignac number, because 727611641 - 2² = 727611637 is a prime.

It is not a weakly prime, because it can be changed into another prime (727611649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363805820 + 363805821.

It is an arithmetic number, because the mean of its divisors is an integer number (363805821).

Almost surely, 2^727611641 is an apocalyptic number.

It is an amenable number.

727611641 is a deficient number, since it is larger than the sum of its proper divisors (1).

727611641 is an equidigital number, since it uses as much as digits as its factorization.

727611641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 35.

The square root of 727611641 is about 26974.2773953261. The cubic root of 727611641 is about 899.4282957627.

The spelling of 727611641 in words is "seven hundred twenty-seven million, six hundred eleven thousand, six hundred forty-one".