804365641 has 2 divisors, whose sum is σ = 804365642. Its totient is φ = 804365640.

The previous prime is 804365633. The next prime is 804365657. The reversal of 804365641 is 146563408.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 567821241 + 236544400 = 23829^2 + 15380^2 .

It is a cyclic number.

It is not a de Polignac number, because 804365641 - 2³ = 804365633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 804365641.

It is not a weakly prime, because it can be changed into another prime (804365621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402182820 + 402182821.

It is an arithmetic number, because the mean of its divisors is an integer number (402182821).

Almost surely, 2^804365641 is an apocalyptic number.

It is an amenable number.

804365641 is a deficient number, since it is larger than the sum of its proper divisors (1).

804365641 is an equidigital number, since it uses as much as digits as its factorization.

804365641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 804365641 is about 28361.3406065369. The cubic root of 804365641 is about 930.0033302382.

The spelling of 804365641 in words is "eight hundred four million, three hundred sixty-five thousand, six hundred forty-one".