117116666 has 4 divisors (see below), whose sum is σ = 175675002. Its totient is φ = 58558332.

The previous prime is 117116653. The next prime is 117116669. The reversal of 117116666 is 666611711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 666611711 = 23291 ⋅28621.

It can be written as a sum of positive squares in only one way, i.e., 64336441 + 52780225 = 8021^2 + 7265^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (117116669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29279165 + ... + 29279168.

Almost surely, 2^117116666 is an apocalyptic number.

117116666 is a deficient number, since it is larger than the sum of its proper divisors (58558336).

117116666 is an equidigital number, since it uses as much as digits as its factorization.

117116666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58558335.

The product of its digits is 9072, while the sum is 35.

The square root of 117116666 is about 10822.0453704464. The cubic root of 117116666 is about 489.2598376792.

The spelling of 117116666 in words is "one hundred seventeen million, one hundred sixteen thousand, six hundred sixty-six".