66008766 has 32 divisors (see below), whose sum is σ = 134691840. Its totient is φ = 21561696.

The previous prime is 66008759. The next prime is 66008779. The reversal of 66008766 is 66780066.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73975 + ... + 74861.

It is an arithmetic number, because the mean of its divisors is an integer number (4209120).

Almost surely, 2^66008766 is an apocalyptic number.

66008766 is an abundant number, since it is smaller than the sum of its proper divisors (68683074).

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

66008766 is a wasteful number, since it uses less digits than its factorization.

66008766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 66008766 is about 8124.5778967279. The cubic root of 66008766 is about 404.1418929419.

The spelling of 66008766 in words is "sixty-six million, eight thousand, seven hundred sixty-six".