729703669 has 2 divisors, whose sum is σ = 729703670. Its totient is φ = 729703668.

The previous prime is 729703591. The next prime is 729703687. The reversal of 729703669 is 966307927.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 436266769 + 293436900 = 20887^2 + 17130^2 .

It is a cyclic number.

It is not a de Polignac number, because 729703669 - 2²⁷ = 595485941 is a prime.

It is a super-2 number, since 2×729703669² = 1064934889104123122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (729703769) 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, 364851834 + 364851835.

It is an arithmetic number, because the mean of its divisors is an integer number (364851835).

Almost surely, 2^729703669 is an apocalyptic number.

It is an amenable number.

729703669 is a deficient number, since it is larger than the sum of its proper divisors (1).

729703669 is an equidigital number, since it uses as much as digits as its factorization.

729703669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 857304, while the sum is 49.

The square root of 729703669 is about 27013.0277643955. The cubic root of 729703669 is about 900.2894825989.

The spelling of 729703669 in words is "seven hundred twenty-nine million, seven hundred three thousand, six hundred sixty-nine".