806408693 has 2 divisors, whose sum is σ = 806408694. Its totient is φ = 806408692.

The previous prime is 806408683. The next prime is 806408723. The reversal of 806408693 is 396804608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 789778609 + 16630084 = 28103^2 + 4078^2 .

It is a cyclic number.

It is not a de Polignac number, because 806408693 - 2⁸ = 806408437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (806408653) 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 as a sum of consecutive naturals, namely, 403204346 + 403204347.

It is an arithmetic number, because the mean of its divisors is an integer number (403204347).

Almost surely, 2^806408693 is an apocalyptic number.

It is an amenable number.

806408693 is a deficient number, since it is larger than the sum of its proper divisors (1).

806408693 is an equidigital number, since it uses as much as digits as its factorization.

806408693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 806408693 is about 28397.3360194227. The cubic root of 806408693 is about 930.7900531982.

The spelling of 806408693 in words is "eight hundred six million, four hundred eight thousand, six hundred ninety-three".