605806 has 4 divisors (see below), whose sum is σ = 908712. Its totient is φ = 302902.

The previous prime is 605789. The next prime is 605809. The reversal of 605806 is 608506.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 608506 = 2 ⋅304253.

It is a plaindrome 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.

605806 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151450 + ... + 151453.

It is an arithmetic number, because the mean of its divisors is an integer number (227178).

2⁶⁰⁵⁸⁰⁶ is an apocalyptic number.

605806 is a deficient number, since it is larger than the sum of its proper divisors (302906).

605806 is a wasteful number, since it uses less digits than its factorization.

605806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302905.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 605806 is about 778.3354032806. The cubic root of 605806 is about 84.6144475845.

The spelling of 605806 in words is "six hundred five thousand, eight hundred six".