603609 has 4 divisors (see below), whose sum is σ = 804816. Its totient is φ = 402404.

The previous prime is 603607. The next prime is 603613. The reversal of 603609 is 906306.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 603609 - 2¹ = 603607 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (603607) 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, 100599 + ... + 100604.

It is an arithmetic number, because the mean of its divisors is an integer number (201204).

2⁶⁰³⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

603609 is a deficient number, since it is larger than the sum of its proper divisors (201207).

603609 is a wasteful number, since it uses less digits than its factorization.

603609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201206.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 603609 is about 776.9227760852. The cubic root of 603609 is about 84.5120368460.

The spelling of 603609 in words is "six hundred three thousand, six hundred nine".