66006786 has 8 divisors (see below), whose sum is σ = 132013584. Its totient is φ = 22002260.

The previous prime is 66006769. The next prime is 66006793. The reversal of 66006786 is 68760066.

It is a sphenic number, since it is the product of 3 distinct primes.

66006786 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5500560 + ... + 5500571.

It is an arithmetic number, because the mean of its divisors is an integer number (16501698).

Almost surely, 2^66006786 is an apocalyptic number.

66006786 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66006786 is a wasteful number, since it uses less digits than its factorization.

66006786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11001136.

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

The square root of 66006786 is about 8124.4560433299. The cubic root of 66006786 is about 404.1378520193.

The spelling of 66006786 in words is "sixty-six million, six thousand, seven hundred eighty-six".