240687 has 12 divisors (see below), whose sum is σ = 355680. Its totient is φ = 156768.

The previous prime is 240677. The next prime is 240701. The reversal of 240687 is 786042.

It is not a de Polignac number, because 240687 - 2⁶ = 240623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139 + ... + 707.

It is an arithmetic number, because the mean of its divisors is an integer number (29640).

2²⁴⁰⁶⁸⁷ is an apocalyptic number.

240687 is a deficient number, since it is larger than the sum of its proper divisors (114993).

240687 is a wasteful number, since it uses less digits than its factorization.

240687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 240687 is about 490.5986139402. The cubic root of 240687 is about 62.2038899839.

The spelling of 240687 in words is "two hundred forty thousand, six hundred eighty-seven".