806704729 has 4 divisors (see below), whose sum is σ = 806816484. Its totient is φ = 806592976.

The previous prime is 806704711. The next prime is 806704739. The reversal of 806704729 is 927407608.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 473715225 + 332989504 = 21765^2 + 18248^2 .

It is a cyclic number.

It is not a de Polignac number, because 806704729 - 2⁷ = 806704601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (806704739) 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 3 ways as a sum of consecutive naturals, for example, 44242 + ... + 59755.

It is an arithmetic number, because the mean of its divisors is an integer number (201704121).

Almost surely, 2^806704729 is an apocalyptic number.

It is an amenable number.

806704729 is a deficient number, since it is larger than the sum of its proper divisors (111755).

806704729 is a wasteful number, since it uses less digits than its factorization.

806704729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111754.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 806704729 is about 28402.5479314797. The cubic root of 806704729 is about 930.9039382357.

The spelling of 806704729 in words is "eight hundred six million, seven hundred four thousand, seven hundred twenty-nine".