481564566 has 96 divisors (see below), whose sum is σ = 1222041600. Its totient is φ = 134222400.

The previous prime is 481564511. The next prime is 481564579. The reversal of 481564566 is 665465184.

481564566 is a `hidden beast` number, since 4 + 81 + 5 + 6 + 4 + 566 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1005115 + ... + 1005593.

It is an arithmetic number, because the mean of its divisors is an integer number (12729600).

Almost surely, 2^481564566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 481564566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (611020800).

481564566 is an abundant number, since it is smaller than the sum of its proper divisors (740477034).

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

481564566 is a wasteful number, since it uses less digits than its factorization.

481564566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 671 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 481564566 is about 21944.5794218071. The cubic root of 481564566 is about 783.8233096113.

The spelling of 481564566 in words is "four hundred eighty-one million, five hundred sixty-four thousand, five hundred sixty-six".