605656 has 8 divisors (see below), whose sum is σ = 1135620. Its totient is φ = 302824.

The previous prime is 605641. The next prime is 605687. The reversal of 605656 is 656506.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 37846 + ... + 37861.

2⁶⁰⁵⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

605656 is a deficient number, since it is larger than the sum of its proper divisors (529964).

605656 is a wasteful number, since it uses less digits than its factorization.

605656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75713 (or 75709 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 605656 is about 778.2390378284. The cubic root of 605656 is about 84.6074633822.

The spelling of 605656 in words is "six hundred five thousand, six hundred fifty-six".