808066645 has 8 divisors (see below), whose sum is σ = 969833304. Its totient is φ = 646351104.

The previous prime is 808066619. The next prime is 808066697. The reversal of 808066645 is 546660808.

It can be written as a sum of positive squares in 4 ways, for example, as 3833764 + 804232881 = 1958^2 + 28359^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 808066645 - 2¹¹ = 808064597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 50457 + ... + 64513.

It is an arithmetic number, because the mean of its divisors is an integer number (121229163).

Almost surely, 2^808066645 is an apocalyptic number.

It is an amenable number.

808066645 is a deficient number, since it is larger than the sum of its proper divisors (161766659).

808066645 is a wasteful number, since it uses less digits than its factorization.

808066645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25559.

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 808066645 is about 28426.5130643911. The cubic root of 808066645 is about 931.4275086454.

The spelling of 808066645 in words is "eight hundred eight million, sixty-six thousand, six hundred forty-five".