116591689 has 4 divisors (see below), whose sum is σ = 116740624. Its totient is φ = 116442756.

The previous prime is 116591663. The next prime is 116591707. The reversal of 116591689 is 986195611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 986195611 = 3389 ⋅290999.

It is a cyclic number.

It is not a de Polignac number, because 116591689 - 2¹⁹ = 116067401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116591639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73287 + ... + 74860.

It is an arithmetic number, because the mean of its divisors is an integer number (29185156).

Almost surely, 2^116591689 is an apocalyptic number.

It is an amenable number.

116591689 is a deficient number, since it is larger than the sum of its proper divisors (148935).

116591689 is an equidigital number, since it uses as much as digits as its factorization.

116591689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148934.

The product of its digits is 116640, while the sum is 46.

The square root of 116591689 is about 10797.7631479858. The cubic root of 116591689 is about 488.5277047635.

The spelling of 116591689 in words is "one hundred sixteen million, five hundred ninety-one thousand, six hundred eighty-nine".