568404 has 48 divisors (see below), whose sum is σ = 1556800. Its totient is φ = 178848.

The previous prime is 568391. The next prime is 568433. The reversal of 568404 is 404865.

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.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1914 + ... + 2190.

2⁵⁶⁸⁴⁰⁴ is an apocalyptic number.

568404 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 568404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (778400).

568404 is an abundant number, since it is smaller than the sum of its proper divisors (988396).

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

568404 is a wasteful number, since it uses less digits than its factorization.

568404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309 (or 301 counting only the distinct ones).

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

The square root of 568404 is about 753.9257257847. The cubic root of 568404 is about 82.8359851986.

The spelling of 568404 in words is "five hundred sixty-eight thousand, four hundred four".