804985641 has 8 divisors (see below), whose sum is σ = 1192571360. Its totient is φ = 536657076.

The previous prime is 804985633. The next prime is 804985651. The reversal of 804985641 is 146589408.

804985641 is a `hidden beast` number, since 80 + 4 + 9 + 8 + 564 + 1 = 666.

It is not a de Polignac number, because 804985641 - 2³ = 804985633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (804985631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14907115 + ... + 14907168.

It is an arithmetic number, because the mean of its divisors is an integer number (149071420).

Almost surely, 2^804985641 is an apocalyptic number.

It is an amenable number.

804985641 is a deficient number, since it is larger than the sum of its proper divisors (387585719).

804985641 is a wasteful number, since it uses less digits than its factorization.

804985641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29814292 (or 29814286 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 804985641 is about 28372.2688729682. The cubic root of 804985641 is about 930.2422157863.

The spelling of 804985641 in words is "eight hundred four million, nine hundred eighty-five thousand, six hundred forty-one".