116665689 has 8 divisors (see below), whose sum is σ = 177776320. Its totient is φ = 66666096.

The previous prime is 116665687. The next prime is 116665711. The reversal of 116665689 is 986566611.

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

It is not a de Polignac number, because 116665689 - 2¹ = 116665687 is a prime.

It is a super-3 number, since 3×116665689³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (116665687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2777734 + ... + 2777775.

It is an arithmetic number, because the mean of its divisors is an integer number (22222040).

Almost surely, 2^116665689 is an apocalyptic number.

It is an amenable number.

116665689 is a deficient number, since it is larger than the sum of its proper divisors (61110631).

116665689 is an equidigital number, since it uses as much as digits as its factorization.

116665689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555519.

The product of its digits is 466560, while the sum is 48.

The square root of 116665689 is about 10801.1892400791. The cubic root of 116665689 is about 488.6310380424.

The spelling of 116665689 in words is "one hundred sixteen million, six hundred sixty-five thousand, six hundred eighty-nine".