113566 has 4 divisors (see below), whose sum is σ = 170352. Its totient is φ = 56782.

The previous prime is 113557. The next prime is 113567. The reversal of 113566 is 665311.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28390 + ... + 28393.

It is an arithmetic number, because the mean of its divisors is an integer number (42588).

2¹¹³⁵⁶⁶ is an apocalyptic number.

113566 is a deficient number, since it is larger than the sum of its proper divisors (56786).

113566 is an equidigital number, since it uses as much as digits as its factorization.

113566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56785.

The product of its digits is 540, while the sum is 22.

The square root of 113566 is about 336.9955489320. The cubic root of 113566 is about 48.4264659570.

Adding to 113566 its reverse (665311), we get a palindrome (778877).

The spelling of 113566 in words is "one hundred thirteen thousand, five hundred sixty-six".