655603 has 16 divisors (see below), whose sum is σ = 766080. Its totient is φ = 556416.

The previous prime is 655601. The next prime is 655637. The reversal of 655603 is 306556.

It is a cyclic number.

It is not a de Polignac number, because 655603 - 2¹ = 655601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13926 + ... + 13972.

It is an arithmetic number, because the mean of its divisors is an integer number (47880).

2⁶⁵⁵⁶⁰³ is an apocalyptic number.

655603 is a deficient number, since it is larger than the sum of its proper divisors (110477).

655603 is a wasteful number, since it uses less digits than its factorization.

655603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 655603 is about 809.6931517557. The cubic root of 655603 is about 86.8720981382.

The spelling of 655603 in words is "six hundred fifty-five thousand, six hundred three".