804880066 has 8 divisors (see below), whose sum is σ = 1208884284. Its totient is φ = 401918640.

The previous prime is 804880019. The next prime is 804880067. The reversal of 804880066 is 660088408.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 782041225 + 22838841 = 27965^2 + 4779^2 .

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

It is not an unprimeable number, because it can be changed into a prime (804880067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258765 + ... + 261856.

Almost surely, 2^804880066 is an apocalyptic number.

804880066 is a deficient number, since it is larger than the sum of its proper divisors (404004218).

804880066 is a wasteful number, since it uses less digits than its factorization.

804880066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521396.

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 804880066 is about 28370.4082804601. The cubic root of 804880066 is about 930.2015464829.

The spelling of 804880066 in words is "eight hundred four million, eight hundred eighty thousand, sixty-six".