9666565842 has 8 divisors (see below), whose sum is σ = 19333131696. Its totient is φ = 3222188612.

The previous prime is 9666565829. The next prime is 9666565889. The reversal of 9666565842 is 2485656669.

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

9666565842 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, 805547148 + ... + 805547159.

It is an arithmetic number, because the mean of its divisors is an integer number (2416641462).

Almost surely, 2^9666565842 is an apocalyptic number.

9666565842 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.

9666565842 is a wasteful number, since it uses less digits than its factorization.

9666565842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611094312.

The product of its digits is 18662400, while the sum is 57.

The square root of 9666565842 is about 98318.6952822300. The cubic root of 9666565842 is about 2130.2181032587.

The spelling of 9666565842 in words is "nine billion, six hundred sixty-six million, five hundred sixty-five thousand, eight hundred forty-two".