118687 has 2 divisors, whose sum is σ = 118688. Its totient is φ = 118686.

The previous prime is 118681. The next prime is 118691. The reversal of 118687 is 786811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 118687 - 2¹¹ = 116639 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59343 + 59344.

It is an arithmetic number, because the mean of its divisors is an integer number (59344).

2¹¹⁸⁶⁸⁷ is an apocalyptic number.

118687 is a deficient number, since it is larger than the sum of its proper divisors (1).

118687 is an equidigital number, since it uses as much as digits as its factorization.

118687 is an odious number, because the sum of its binary digits is odd.

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

The square root of 118687 is about 344.5097966677. The cubic root of 118687 is about 49.1436848769.

The spelling of 118687 in words is "one hundred eighteen thousand, six hundred eighty-seven".