571668 has 12 divisors (see below), whose sum is σ = 1333920. Its totient is φ = 190552.

The previous prime is 571657. The next prime is 571673. The reversal of 571668 is 866175.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

571668 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 3 ways as a sum of consecutive naturals, for example, 23808 + ... + 23831.

It is an arithmetic number, because the mean of its divisors is an integer number (111160).

2⁵⁷¹⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

571668 is an abundant number, since it is smaller than the sum of its proper divisors (762252).

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

571668 is a wasteful number, since it uses less digits than its factorization.

571668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47646 (or 47644 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 571668 is about 756.0872965472. The cubic root of 571668 is about 82.9942416289.

The spelling of 571668 in words is "five hundred seventy-one thousand, six hundred sixty-eight".