806428585 has 12 divisors (see below), whose sum is σ = 988755588. Its totient is φ = 631407776.

The previous prime is 806428573. The next prime is 806428589. The reversal of 806428585 is 585824608.

It can be written as a sum of positive squares in 2 ways, for example, as 475588864 + 330839721 = 21808^2 + 18189^2 .

It is a de Polignac number, because none of the positive numbers 2^k-806428585 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (806428589) 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 11 ways as a sum of consecutive naturals, for example, 25462 + ... + 47551.

It is an arithmetic number, because the mean of its divisors is an integer number (82396299).

Almost surely, 2^806428585 is an apocalyptic number.

It is an amenable number.

806428585 is a deficient number, since it is larger than the sum of its proper divisors (182327003).

806428585 is an equidigital number, since it uses as much as digits as its factorization.

806428585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73112 (or 73065 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 46.

The square root of 806428585 is about 28397.6862613840. The cubic root of 806428585 is about 930.7977065232.

The spelling of 806428585 in words is "eight hundred six million, four hundred twenty-eight thousand, five hundred eighty-five".