118786 has 4 divisors (see below), whose sum is σ = 178182. Its totient is φ = 59392.

The previous prime is 118757. The next prime is 118787. The reversal of 118786 is 687811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 687811 = 797 ⋅863.

It can be written as a sum of positive squares in only one way, i.e., 112225 + 6561 = 335^2 + 81^2 .

It is a super-2 number, since 2×118786² = 28220227592, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (118787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29695 + ... + 29698.

2¹¹⁸⁷⁸⁶ is an apocalyptic number.

118786 is a deficient number, since it is larger than the sum of its proper divisors (59396).

118786 is an equidigital number, since it uses as much as digits as its factorization.

118786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59395.

The product of its digits is 2688, while the sum is 31.

The square root of 118786 is about 344.6534491341. The cubic root of 118786 is about 49.1573450999.

The spelling of 118786 in words is "one hundred eighteen thousand, seven hundred eighty-six".