117871658 has 8 divisors (see below), whose sum is σ = 176862180. Its totient is φ = 58917600.

The previous prime is 117871651. The next prime is 117871661. The reversal of 117871658 is 856178711.

It can be written as a sum of positive squares in 2 ways, for example, as 81667369 + 36204289 = 9037^2 + 6017^2 .

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

It is not an unprimeable number, because it can be changed into a prime (117871651) 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, 1388 + ... + 15416.

Almost surely, 2^117871658 is an apocalyptic number.

117871658 is a deficient number, since it is larger than the sum of its proper divisors (58990522).

117871658 is a wasteful number, since it uses less digits than its factorization.

117871658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18232.

The product of its digits is 94080, while the sum is 44.

The square root of 117871658 is about 10856.8714646532. The cubic root of 117871658 is about 490.3089236191.

The spelling of 117871658 in words is "one hundred seventeen million, eight hundred seventy-one thousand, six hundred fifty-eight".