605831 has 4 divisors (see below), whose sum is σ = 607464. Its totient is φ = 604200.

The previous prime is 605809. The next prime is 605837. The reversal of 605831 is 138506.

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 605831 - 2¹⁸ = 343687 is a prime.

It is a super-2 number, since 2×605831² = 734062401122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 605797 and 605806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605837) 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, 41 + ... + 1101.

It is an arithmetic number, because the mean of its divisors is an integer number (151866).

2⁶⁰⁵⁸³¹ is an apocalyptic number.

605831 is a deficient number, since it is larger than the sum of its proper divisors (1633).

605831 is a wasteful number, since it uses less digits than its factorization.

605831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 605831 is about 778.3514630294. The cubic root of 605831 is about 84.6156115061.

The spelling of 605831 in words is "six hundred five thousand, eight hundred thirty-one".