405608 has 16 divisors (see below), whose sum is σ = 869280. Its totient is φ = 173808.

The previous prime is 405607. The next prime is 405611. The reversal of 405608 is 806504.

It is not an unprimeable number, because it can be changed into a prime (405607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3566 + ... + 3677.

It is an arithmetic number, because the mean of its divisors is an integer number (54330).

2⁴⁰⁵⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

405608 is an abundant number, since it is smaller than the sum of its proper divisors (463672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405608 is a wasteful number, since it uses less digits than its factorization.

405608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7256 (or 7252 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 405608 is about 636.8736138356. The cubic root of 405608 is about 74.0233673465.

The spelling of 405608 in words is "four hundred five thousand, six hundred eight".