117566 has 8 divisors (see below), whose sum is σ = 182520. Its totient is φ = 56728.

The previous prime is 117563. The next prime is 117571. The reversal of 117566 is 665711.

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

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117563) 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, 956 + ... + 1071.

It is an arithmetic number, because the mean of its divisors is an integer number (22815).

2¹¹⁷⁵⁶⁶ is an apocalyptic number.

117566 is a deficient number, since it is larger than the sum of its proper divisors (64954).

117566 is a wasteful number, since it uses less digits than its factorization.

117566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2058.

The product of its digits is 1260, while the sum is 26.

The square root of 117566 is about 342.8789873993. The cubic root of 117566 is about 48.9884743126.

The spelling of 117566 in words is "one hundred seventeen thousand, five hundred sixty-six".