605805 has 8 divisors (see below), whose sum is σ = 969312. Its totient is φ = 323088.

The previous prime is 605789. The next prime is 605809. The reversal of 605805 is 508506.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 605805 - 2⁴ = 605789 is a prime.

It is a plaindrome in base 14.

It is a zygodrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20179 + ... + 20208.

It is an arithmetic number, because the mean of its divisors is an integer number (121164).

2⁶⁰⁵⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

605805 is a deficient number, since it is larger than the sum of its proper divisors (363507).

605805 is a wasteful number, since it uses less digits than its factorization.

605805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40395.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 605805 is about 778.3347608838. The cubic root of 605805 is about 84.6144010269.

The spelling of 605805 in words is "six hundred five thousand, eight hundred five".