10805891 has 2 divisors, whose sum is σ = 10805892. Its totient is φ = 10805890.

The previous prime is 10805849. The next prime is 10805917. The reversal of 10805891 is 19850801.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10805891 - 2¹⁸ = 10543747 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (10805831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5402945 + 5402946.

It is an arithmetic number, because the mean of its divisors is an integer number (5402946).

Almost surely, 2^10805891 is an apocalyptic number.

10805891 is a deficient number, since it is larger than the sum of its proper divisors (1).

10805891 is an equidigital number, since it uses as much as digits as its factorization.

10805891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 10805891 is about 3287.2315099488. The cubic root of 10805891 is about 221.0820726680.

The spelling of 10805891 in words is "ten million, eight hundred five thousand, eight hundred ninety-one".