8240682666 has 8 divisors (see below), whose sum is σ = 16481365344. Its totient is φ = 2746894220.

The previous prime is 8240682643. The next prime is 8240682677. The reversal of 8240682666 is 6662860428.

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

8240682666 is an admirable number.

It is a super-3 number, since 3×8240682666³ (a number of 31 digits) contains 333 as substring.

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, 686723550 + ... + 686723561.

It is an arithmetic number, because the mean of its divisors is an integer number (2060170668).

Almost surely, 2^8240682666 is an apocalyptic number.

8240682666 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.

8240682666 is a wasteful number, since it uses less digits than its factorization.

8240682666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373447116.

The product of its (nonzero) digits is 1327104, while the sum is 48.

The square root of 8240682666 is about 90778.2058976713. The cubic root of 8240682666 is about 2019.8590453225.

The spelling of 8240682666 in words is "eight billion, two hundred forty million, six hundred eighty-two thousand, six hundred sixty-six".