804860646066 has 20 divisors (see below), whose sum is σ = 1803484040622. Its totient is φ = 268286881968.

The previous prime is 804860646053. The next prime is 804860646077. The reversal of 804860646066 is 660646068408.

804860646066 is a `hidden beast` number, since 80 + 48 + 6 + 0 + 6 + 460 + 66 = 666.

It can be written as a sum of positive squares in only one way, i.e., 798394073841 + 6466572225 = 893529^2 + 80415^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2484137635 + ... + 2484137958.

Almost surely, 2^804860646066 is an apocalyptic number.

804860646066 is an abundant number, since it is smaller than the sum of its proper divisors (998623394556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

804860646066 is a wasteful number, since it uses less digits than its factorization.

804860646066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4968275607 (or 4968275598 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 54.

The spelling of 804860646066 in words is "eight hundred four billion, eight hundred sixty million, six hundred forty-six thousand, sixty-six".