566631 has 24 divisors (see below), whose sum is σ = 917280. Its totient is φ = 334656.

The previous prime is 566617. The next prime is 566633. The reversal of 566631 is 136665.

566631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 566631 - 2⁶ = 566567 is a prime.

It is a super-2 number, since 2×566631² = 642141380322, which contains 22 as substring.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 566595 and 566604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3310 + ... + 3476.

It is an arithmetic number, because the mean of its divisors is an integer number (38220).

2⁵⁶⁶⁶³¹ is an apocalyptic number.

566631 is a deficient number, since it is larger than the sum of its proper divisors (350649).

566631 is a wasteful number, since it uses less digits than its factorization.

566631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 212 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 566631 is about 752.7489621381. The cubic root of 566631 is about 82.7497664917.

Subtracting from 566631 its product of digits (3240), we obtain a triangular number (563391 = T₁₀₆₁).

The spelling of 566631 in words is "five hundred sixty-six thousand, six hundred thirty-one".