118487 has 4 divisors (see below), whose sum is σ = 121056. Its totient is φ = 115920.

The previous prime is 118471. The next prime is 118493. The reversal of 118487 is 784811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784811 = 647 ⋅1213.

It is a cyclic number.

It is not a de Polignac number, because 118487 - 2⁴ = 118471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 118487.

It is not an unprimeable number, because it can be changed into a prime (118457) 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, 1214 + ... + 1307.

It is an arithmetic number, because the mean of its divisors is an integer number (30264).

2¹¹⁸⁴⁸⁷ is an apocalyptic number.

118487 is a deficient number, since it is larger than the sum of its proper divisors (2569).

118487 is an equidigital number, since it uses as much as digits as its factorization.

118487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568.

The product of its digits is 1792, while the sum is 29.

The square root of 118487 is about 344.2194067742. The cubic root of 118487 is about 49.1160652753.

The spelling of 118487 in words is "one hundred eighteen thousand, four hundred eighty-seven".