605663 has 8 divisors (see below), whose sum is σ = 645120. Its totient is φ = 567000.

The previous prime is 605641. The next prime is 605687. The reversal of 605663 is 366506.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 605663 - 2⁶ = 605599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2288 + ... + 2538.

It is an arithmetic number, because the mean of its divisors is an integer number (80640).

2⁶⁰⁵⁶⁶³ is an apocalyptic number.

605663 is a deficient number, since it is larger than the sum of its proper divisors (39457).

605663 is a wasteful number, since it uses less digits than its factorization.

605663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 605663 is about 778.2435351482. The cubic root of 605663 is about 84.6077893373.

The spelling of 605663 in words is "six hundred five thousand, six hundred sixty-three".