805913 has 2 divisors, whose sum is σ = 805914. Its totient is φ = 805912.

The previous prime is 805901. The next prime is 805933. The reversal of 805913 is 319508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 797449 + 8464 = 893^2 + 92^2 .

It is a cyclic number.

It is not a de Polignac number, because 805913 - 2¹⁰ = 804889 is a prime.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (805933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402956 + 402957.

It is an arithmetic number, because the mean of its divisors is an integer number (402957).

2⁸⁰⁵⁹¹³ is an apocalyptic number.

It is an amenable number.

805913 is a deficient number, since it is larger than the sum of its proper divisors (1).

805913 is an equidigital number, since it uses as much as digits as its factorization.

805913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 805913 is about 897.7265730722. The cubic root of 805913 is about 93.0599297697.

The spelling of 805913 in words is "eight hundred five thousand, nine hundred thirteen".