805901 has 2 divisors, whose sum is σ = 805902. Its totient is φ = 805900.

The previous prime is 805891. The next prime is 805913. The reversal of 805901 is 109508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 763876 + 42025 = 874^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 805901 - 2¹⁰ = 804877 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 805901.

It is not a weakly prime, because it can be changed into another prime (805991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402950 + 402951.

It is an arithmetic number, because the mean of its divisors is an integer number (402951).

2⁸⁰⁵⁹⁰¹ is an apocalyptic number.

It is an amenable number.

805901 is a deficient number, since it is larger than the sum of its proper divisors (1).

805901 is an equidigital number, since it uses as much as digits as its factorization.

805901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 805901 is about 897.7198894978. The cubic root of 805901 is about 93.0594678817.

The spelling of 805901 in words is "eight hundred five thousand, nine hundred one".