729671 has 2 divisors, whose sum is σ = 729672. Its totient is φ = 729670.

The previous prime is 729661. The next prime is 729679. The reversal of 729671 is 176927.

It is a strong prime.

It is an emirp because it is prime and its reverse (176927) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 729671 - 2⁶ = 729607 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (729679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364835 + 364836.

It is an arithmetic number, because the mean of its divisors is an integer number (364836).

2⁷²⁹⁶⁷¹ is an apocalyptic number.

729671 is a deficient number, since it is larger than the sum of its proper divisors (1).

729671 is an equidigital number, since it uses as much as digits as its factorization.

729671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 32.

The square root of 729671 is about 854.2078201468. The cubic root of 729671 is about 90.0276047010.

The spelling of 729671 in words is "seven hundred twenty-nine thousand, six hundred seventy-one".