117647689 has 4 divisors (see below), whose sum is σ = 117715456. Its totient is φ = 117579924.

The previous prime is 117647687. The next prime is 117647707. The reversal of 117647689 is 986746711.

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: 986746711 = 71 ⋅13897841.

It is a cyclic number.

It is not a de Polignac number, because 117647689 - 2¹ = 117647687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117647683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31209 + ... + 34774.

It is an arithmetic number, because the mean of its divisors is an integer number (29428864).

Almost surely, 2^117647689 is an apocalyptic number.

It is an amenable number.

117647689 is a deficient number, since it is larger than the sum of its proper divisors (67767).

117647689 is an equidigital number, since it uses as much as digits as its factorization.

117647689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67766.

The product of its digits is 508032, while the sum is 49.

The square root of 117647689 is about 10846.5519405938. The cubic root of 117647689 is about 489.9981799183.

It can be divided in two parts, 117647 and 689, that added together give a square (118336 = 344²).

The spelling of 117647689 in words is "one hundred seventeen million, six hundred forty-seven thousand, six hundred eighty-nine".