566840 has 32 divisors (see below), whose sum is σ = 1313280. Its totient is φ = 220032.

The previous prime is 566833. The next prime is 566851. The reversal of 566840 is 48665.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1289 + ... + 1671.

It is an arithmetic number, because the mean of its divisors is an integer number (41040).

2⁵⁶⁶⁸⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 566840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (656640).

566840 is an abundant number, since it is smaller than the sum of its proper divisors (746440).

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

566840 is a wasteful number, since it uses less digits than its factorization.

566840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 566840 is about 752.8877738415. The cubic root of 566840 is about 82.7599392351.

The spelling of 566840 in words is "five hundred sixty-six thousand, eight hundred forty".