66566360 has 32 divisors (see below), whose sum is σ = 171171360. Its totient is φ = 22822656.

The previous prime is 66566359. The next prime is 66566363. The reversal of 66566360 is 6366566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66566363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118589 + ... + 119148.

It is an arithmetic number, because the mean of its divisors is an integer number (5349105).

Almost surely, 2^66566360 is an apocalyptic number.

It is an amenable number.

66566360 is an abundant number, since it is smaller than the sum of its proper divisors (104605000).

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

66566360 is a wasteful number, since it uses less digits than its factorization.

66566360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237755 (or 237751 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 38.

The square root of 66566360 is about 8158.8209932563. The cubic root of 66566360 is about 405.2766691574.

The spelling of 66566360 in words is "sixty-six million, five hundred sixty-six thousand, three hundred sixty".