117158666 has 8 divisors (see below), whose sum is σ = 181798020. Its totient is φ = 56559328.

The previous prime is 117158647. The next prime is 117158669. The reversal of 117158666 is 666851711.

It can be written as a sum of positive squares in 2 ways, for example, as 114169225 + 2989441 = 10685^2 + 1729^2 .

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

It is a super-3 number, since 3×117158666³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (117158669) 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, 1009931 + ... + 1010046.

Almost surely, 2^117158666 is an apocalyptic number.

117158666 is a deficient number, since it is larger than the sum of its proper divisors (64639354).

117158666 is a wasteful number, since it uses less digits than its factorization.

117158666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020008.

The product of its digits is 60480, while the sum is 41.

The square root of 117158666 is about 10823.9856799610. The cubic root of 117158666 is about 489.3183162828.

The spelling of 117158666 in words is "one hundred seventeen million, one hundred fifty-eight thousand, six hundred sixty-six".