8640340268 has 12 divisors (see below), whose sum is σ = 17280680592. Its totient is φ = 3703002960.

The previous prime is 8640340259. The next prime is 8640340279. The reversal of 8640340268 is 8620430468.

8640340268 is an admirable 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, 154291763 + ... + 154291818.

It is an arithmetic number, because the mean of its divisors is an integer number (1440056716).

Almost surely, 2^8640340268 is an apocalyptic number.

It is an amenable number.

8640340268 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.

8640340268 is a wasteful number, since it uses less digits than its factorization.

8640340268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308583592 (or 308583590 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 41.

The square root of 8640340268 is about 92953.4306413701. The cubic root of 8640340268 is about 2051.9980731628.

The spelling of 8640340268 in words is "eight billion, six hundred forty million, three hundred forty thousand, two hundred sixty-eight".