404568 has 32 divisors (see below), whose sum is σ = 1124400. Its totient is φ = 134784.

The previous prime is 404557. The next prime is 404597. The reversal of 404568 is 865404.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

404568 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721 + ... + 1152.

2⁴⁰⁴⁵⁶⁸ is an apocalyptic number.

It is an amenable number.

404568 is an abundant number, since it is smaller than the sum of its proper divisors (719832).

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

404568 is a wasteful number, since it uses less digits than its factorization.

404568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888 (or 1878 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 404568 is about 636.0566012550. The cubic root of 404568 is about 73.9600466089.

The spelling of 404568 in words is "four hundred four thousand, five hundred sixty-eight".