603943 has 4 divisors (see below), whose sum is σ = 607608. Its totient is φ = 600280.

The previous prime is 603937. The next prime is 603947. The reversal of 603943 is 349306.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 349306 = 2 ⋅174653.

It is a cyclic number.

It is not a de Polignac number, because 603943 - 2⁹ = 603431 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (603947) 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, 1573 + ... + 1918.

It is an arithmetic number, because the mean of its divisors is an integer number (151902).

2⁶⁰³⁹⁴³ is an apocalyptic number.

603943 is a deficient number, since it is larger than the sum of its proper divisors (3665).

603943 is a wasteful number, since it uses less digits than its factorization.

603943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3664.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 603943 is about 777.1376969366. The cubic root of 603943 is about 84.5276218884.

The spelling of 603943 in words is "six hundred three thousand, nine hundred forty-three".