566665520 has 40 divisors (see below), whose sum is σ = 1318683456. Its totient is φ = 226462208.

The previous prime is 566665487. The next prime is 566665543. The reversal of 566665520 is 25566665.

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

It is a super-2 number, since 2×566665520² = 642219623113740800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112169 + ... + 117111.

Almost surely, 2^566665520 is an apocalyptic number.

It is an amenable number.

566665520 is an abundant number, since it is smaller than the sum of its proper divisors (752017936).

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

566665520 is a wasteful number, since it uses less digits than its factorization.

566665520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6389 (or 6383 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 41.

The square root of 566665520 is about 23804.7373436465. The cubic root of 566665520 is about 827.5144687034.

The spelling of 566665520 in words is "five hundred sixty-six million, six hundred sixty-five thousand, five hundred twenty".