117166405 has 8 divisors (see below), whose sum is σ = 140936184. Its totient is φ = 93508800.

The previous prime is 117166403. The next prime is 117166429. The reversal of 117166405 is 504661711.

It can be written as a sum of positive squares in 4 ways, for example, as 2719201 + 114447204 = 1649^2 + 10698^2 .

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

It is not a de Polignac number, because 117166405 - 2¹ = 117166403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117166403) 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, 25726 + ... + 29935.

It is an arithmetic number, because the mean of its divisors is an integer number (17617023).

Almost surely, 2^117166405 is an apocalyptic number.

It is an amenable number.

117166405 is a deficient number, since it is larger than the sum of its proper divisors (23769779).

117166405 is an equidigital number, since it uses as much as digits as its factorization.

117166405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56087.

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

The square root of 117166405 is about 10824.3431671395. The cubic root of 117166405 is about 489.3290901368.

It can be divided in two parts, 1171 and 66405, that added together give a palindrome (67576).

The spelling of 117166405 in words is "one hundred seventeen million, one hundred sixty-six thousand, four hundred five".