8340841665 has 96 divisors (see below), whose sum is σ = 16712710560. Its totient is φ = 3811442688.

The previous prime is 8340841651. The next prime is 8340841667. The reversal of 8340841665 is 5661480438.

8340841665 is a `hidden beast` number, since 83 + 408 + 4 + 166 + 5 = 666.

It can be written as a sum of positive squares in 16 ways, for example, as 2842915761 + 5497925904 = 53319^2 + 74148^2 .

It is not a de Polignac number, because 8340841665 - 2¹⁴ = 8340825281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8340841665.

It is not an unprimeable number, because it can be changed into a prime (8340841667) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 720241 + ... + 731729.

It is an arithmetic number, because the mean of its divisors is an integer number (174090735).

Almost surely, 2^8340841665 is an apocalyptic number.

8340841665 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8340841665 is an abundant number, since it is smaller than the sum of its proper divisors (8371868895).

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

8340841665 is a wasteful number, since it uses less digits than its factorization.

8340841665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11603 (or 11600 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 8340841665 is about 91328.2084845641. The cubic root of 8340841665 is about 2028.0093782756.

The spelling of 8340841665 in words is "eight billion, three hundred forty million, eight hundred forty-one thousand, six hundred sixty-five".