118087 has 4 divisors (see below), whose sum is σ = 118800. Its totient is φ = 117376.

The previous prime is 118081. The next prime is 118093. The reversal of 118087 is 780811.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (118081) and next prime (118093).

It is a cyclic number.

It is not a de Polignac number, because 118087 - 2⁷ = 117959 is a prime.

It is a Duffinian number.

118087 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39 + ... + 487.

It is an arithmetic number, because the mean of its divisors is an integer number (29700).

2¹¹⁸⁰⁸⁷ is an apocalyptic number.

118087 is a deficient number, since it is larger than the sum of its proper divisors (713).

118087 is an equidigital number, since it uses as much as digits as its factorization.

118087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712.

The product of its (nonzero) digits is 448, while the sum is 25.

The square root of 118087 is about 343.6378908095. The cubic root of 118087 is about 49.0607326909.

Adding to 118087 its reverse (780811), we get a palindrome (898898).

The spelling of 118087 in words is "one hundred eighteen thousand, eighty-seven".