605859 has 4 divisors (see below), whose sum is σ = 807816. Its totient is φ = 403904.

The previous prime is 605849. The next prime is 605861. The reversal of 605859 is 958506.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 605859 - 2⁸ = 605603 is a prime.

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 605859.

It is not an unprimeable number, because it can be changed into a prime (605809) 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 in 3 ways as a sum of consecutive naturals, for example, 100974 + ... + 100979.

It is an arithmetic number, because the mean of its divisors is an integer number (201954).

2⁶⁰⁵⁸⁵⁹ is an apocalyptic number.

605859 is a deficient number, since it is larger than the sum of its proper divisors (201957).

605859 is a wasteful number, since it uses less digits than its factorization.

605859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201956.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 605859 is about 778.3694495546. The cubic root of 605859 is about 84.6169150603.

The spelling of 605859 in words is "six hundred five thousand, eight hundred fifty-nine".