117766656 has 160 divisors (see below), whose sum is σ = 398724480. Its totient is φ = 33619968.

The previous prime is 117766619. The next prime is 117766657. The reversal of 117766656 is 656667711.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (117766657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96160 + ... + 97376.

It is an arithmetic number, because the mean of its divisors is an integer number (2492028).

Almost surely, 2^117766656 is an apocalyptic number.

117766656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117766656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199362240).

117766656 is an abundant number, since it is smaller than the sum of its proper divisors (280957824).

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

117766656 is an equidigital number, since it uses as much as digits as its factorization.

117766656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251 (or 1229 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 117766656 is about 10852.0346479358. The cubic root of 117766656 is about 490.1632886308.

The spelling of 117766656 in words is "one hundred seventeen million, seven hundred sixty-six thousand, six hundred fifty-six".