805587641 has 2 divisors, whose sum is σ = 805587642. Its totient is φ = 805587640.

The previous prime is 805587623. The next prime is 805587659. The reversal of 805587641 is 146785508.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (805587623) and next prime (805587659).

It can be written as a sum of positive squares in only one way, i.e., 760160041 + 45427600 = 27571^2 + 6740^2 .

It is a cyclic number.

It is not a de Polignac number, because 805587641 - 2⁶ = 805587577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 805587592 and 805587601.

It is not a weakly prime, because it can be changed into another prime (805587691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402793820 + 402793821.

It is an arithmetic number, because the mean of its divisors is an integer number (402793821).

Almost surely, 2^805587641 is an apocalyptic number.

It is an amenable number.

805587641 is a deficient number, since it is larger than the sum of its proper divisors (1).

805587641 is an equidigital number, since it uses as much as digits as its factorization.

805587641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 268800, while the sum is 44.

The square root of 805587641 is about 28382.8758409010. The cubic root of 805587641 is about 930.4740486063.

The spelling of 805587641 in words is "eight hundred five million, five hundred eighty-seven thousand, six hundred forty-one".