566161920 has 160 divisors (see below), whose sum is σ = 2011299840. Its totient is φ = 150958080.

The previous prime is 566161913. The next prime is 566161933. The reversal of 566161920 is 29161665.

566161920 is a `hidden beast` number, since 5 + 6 + 616 + 19 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65025 + ... + 73215.

It is an arithmetic number, because the mean of its divisors is an integer number (12570624).

Almost surely, 2^566161920 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 566161920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1005649920).

566161920 is an abundant number, since it is smaller than the sum of its proper divisors (1445137920).

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

566161920 is an equidigital number, since it uses as much as digits as its factorization.

566161920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8223 (or 8201 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 566161920 is about 23794.1572660181. The cubic root of 566161920 is about 827.2692565604.

The spelling of 566161920 in words is "five hundred sixty-six million, one hundred sixty-one thousand, nine hundred twenty".