806291 has 2 divisors, whose sum is σ = 806292. Its totient is φ = 806290.

The previous prime is 806269. The next prime is 806297. The reversal of 806291 is 192608.

806291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 806291 - 2¹⁰ = 805267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 806291.

It is not a weakly prime, because it can be changed into another prime (806297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403145 + 403146.

It is an arithmetic number, because the mean of its divisors is an integer number (403146).

2⁸⁰⁶²⁹¹ is an apocalyptic number.

806291 is a deficient number, since it is larger than the sum of its proper divisors (1).

806291 is an equidigital number, since it uses as much as digits as its factorization.

806291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 806291 is about 897.9370802011. The cubic root of 806291 is about 93.0744768963.

Adding to 806291 its reverse (192608), we get a palindrome (998899).

The spelling of 806291 in words is "eight hundred six thousand, two hundred ninety-one".