66008686 has 8 divisors (see below), whose sum is σ = 99065664. Its totient is φ = 32986800.

The previous prime is 66008627. The next prime is 66008731. The reversal of 66008686 is 68680066.

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

It is a congruent 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, 3415 + ... + 11986.

It is an arithmetic number, because the mean of its divisors is an integer number (12383208).

Almost surely, 2^66008686 is an apocalyptic number.

66008686 is a deficient number, since it is larger than the sum of its proper divisors (33056978).

66008686 is a wasteful number, since it uses less digits than its factorization.

66008686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17546.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 66008686 is about 8124.5729733937. The cubic root of 66008686 is about 404.1417296739.

The spelling of 66008686 in words is "sixty-six million, eight thousand, six hundred eighty-six".