117666666 has 48 divisors (see below), whose sum is σ = 286505856. Its totient is φ = 34629408.

The previous prime is 117666649. The next prime is 117666683. The reversal of 117666666 is 666666711.

It is an interprime number because it is at equal distance from previous prime (117666649) and next prime (117666683).

117666666 is a modest number, since divided by 66666 gives 1176 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5550 + ... + 16313.

It is an arithmetic number, because the mean of its divisors is an integer number (5968872).

Almost surely, 2^117666666 is an apocalyptic number.

117666666 is an abundant number, since it is smaller than the sum of its proper divisors (168839190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117666666 is a wasteful number, since it uses less digits than its factorization.

117666666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21907 (or 21904 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 117666666 is about 10847.4266994527. The cubic root of 117666666 is about 490.0245246645.

Adding to 117666666 its sum of digits (45), we get a palindrome (117666711).

The spelling of 117666666 in words is "one hundred seventeen million, six hundred sixty-six thousand, six hundred sixty-six".