566541 has 8 divisors (see below), whose sum is σ = 839360. Its totient is φ = 377676.

The previous prime is 566539. The next prime is 566543. The reversal of 566541 is 145665.

It is a happy number.

566541 is a `hidden beast` number, since 5 + 6 + 654 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (566539) and next prime (566543).

It is not a de Polignac number, because 566541 - 2¹ = 566539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 20983 = 566541 / (5 + 6 + 6 + 5 + 4 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10465 + ... + 10518.

It is an arithmetic number, because the mean of its divisors is an integer number (104920).

2⁵⁶⁶⁵⁴¹ is an apocalyptic number.

It is an amenable number.

566541 is a deficient number, since it is larger than the sum of its proper divisors (272819).

566541 is a wasteful number, since it uses less digits than its factorization.

566541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20992 (or 20986 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 566541 is about 752.6891788780. The cubic root of 566541 is about 82.7453851140.

The spelling of 566541 in words is "five hundred sixty-six thousand, five hundred forty-one".