240705806687 has 2 divisors, whose sum is σ = 240705806688. Its totient is φ = 240705806686.

The previous prime is 240705806669. The next prime is 240705806713. The reversal of 240705806687 is 786608507042.

240705806687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240705806687 - 2¹² = 240705802591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240705806287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120352903343 + 120352903344.

It is an arithmetic number, because the mean of its divisors is an integer number (120352903344).

Almost surely, 2^240705806687 is an apocalyptic number.

240705806687 is a deficient number, since it is larger than the sum of its proper divisors (1).

240705806687 is an equidigital number, since it uses as much as digits as its factorization.

240705806687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 240705806687 in words is "two hundred forty billion, seven hundred five million, eight hundred six thousand, six hundred eighty-seven".