117622165 has 4 divisors (see below), whose sum is σ = 141146604. Its totient is φ = 94097728.

The previous prime is 117622163. The next prime is 117622171. The reversal of 117622165 is 561226711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 561226711 = 2221 ⋅252691.

It can be written as a sum of positive squares in 2 ways, for example, as 32558436 + 85063729 = 5706^2 + 9223^2 .

It is a cyclic number.

It is not a de Polignac number, because 117622165 - 2¹ = 117622163 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117622163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11762212 + ... + 11762221.

It is an arithmetic number, because the mean of its divisors is an integer number (35286651).

Almost surely, 2^117622165 is an apocalyptic number.

It is an amenable number.

117622165 is a deficient number, since it is larger than the sum of its proper divisors (23524439).

117622165 is an equidigital number, since it uses as much as digits as its factorization.

117622165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23524438.

The product of its digits is 5040, while the sum is 31.

The square root of 117622165 is about 10845.3752816581. The cubic root of 117622165 is about 489.9627418568.

Adding to 117622165 its reverse (561226711), we get a palindrome (678848876).

The spelling of 117622165 in words is "one hundred seventeen million, six hundred twenty-two thousand, one hundred sixty-five".