120687 has 12 divisors (see below), whose sum is σ = 187416. Its totient is φ = 68880.

The previous prime is 120677. The next prime is 120689. The reversal of 120687 is 786021.

It is not a de Polignac number, because 120687 - 2⁴ = 120671 is a prime.

120687 is a lucky 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 120687.

It is not an unprimeable number, because it can be changed into a prime (120689) 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 in 11 ways as a sum of consecutive naturals, for example, 264 + ... + 557.

It is an arithmetic number, because the mean of its divisors is an integer number (15618).

2¹²⁰⁶⁸⁷ is an apocalyptic number.

120687 is a deficient number, since it is larger than the sum of its proper divisors (66729).

120687 is an equidigital number, since it uses as much as digits as its factorization.

120687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 120687 is about 347.4003454230. The cubic root of 120687 is about 49.4181895240.

The spelling of 120687 in words is "one hundred twenty thousand, six hundred eighty-seven".