566781440 has 40 divisors (see below), whose sum is σ = 1358953200. Its totient is φ = 226711552.

The previous prime is 566781437. The next prime is 566781443. The reversal of 566781440 is 44187665.

It is an interprime number because it is at equal distance from previous prime (566781437) and next prime (566781443).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (566781443) 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, 108140 + ... + 113259.

It is an arithmetic number, because the mean of its divisors is an integer number (33973830).

Almost surely, 2^566781440 is an apocalyptic number.

It is an amenable number.

566781440 is an abundant number, since it is smaller than the sum of its proper divisors (792171760).

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

566781440 is an equidigital number, since it uses as much as digits as its factorization.

566781440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221422 (or 221406 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 566781440 is about 23807.1720286136. The cubic root of 566781440 is about 827.5708917217.

The spelling of 566781440 in words is "five hundred sixty-six million, seven hundred eighty-one thousand, four hundred forty".