605903 has 4 divisors (see below), whose sum is σ = 608328. Its totient is φ = 603480.

The previous prime is 605893. The next prime is 605909. The reversal of 605903 is 309506.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 309506 = 2 ⋅154753.

It is a cyclic number.

It is not a de Polignac number, because 605903 - 2⁴ = 605887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 605903.

It is not an unprimeable number, because it can be changed into a prime (605909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 788 + ... + 1353.

It is an arithmetic number, because the mean of its divisors is an integer number (152082).

2⁶⁰⁵⁹⁰³ is an apocalyptic number.

605903 is a deficient number, since it is larger than the sum of its proper divisors (2425).

605903 is a wasteful number, since it uses less digits than its factorization.

605903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 605903 is about 778.3977132546. The cubic root of 605903 is about 84.6189634214.

The spelling of 605903 in words is "six hundred five thousand, nine hundred three".