571667 has 4 divisors (see below), whose sum is σ = 576840. Its totient is φ = 566496.

The previous prime is 571657. The next prime is 571673. The reversal of 571667 is 766175.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 571667 - 2⁶ = 571603 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (571657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2417 + ... + 2642.

It is an arithmetic number, because the mean of its divisors is an integer number (144210).

2⁵⁷¹⁶⁶⁷ is an apocalyptic number.

571667 is a deficient number, since it is larger than the sum of its proper divisors (5173).

571667 is a wasteful number, since it uses less digits than its factorization.

571667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5172.

The product of its digits is 8820, while the sum is 32.

The square root of 571667 is about 756.0866352476. The cubic root of 571667 is about 82.9941932358.

The spelling of 571667 in words is "five hundred seventy-one thousand, six hundred sixty-seven".