240687871 has 2 divisors, whose sum is σ = 240687872. Its totient is φ = 240687870.

The previous prime is 240687859. The next prime is 240687901. The reversal of 240687871 is 178786042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240687871 - 2⁷ = 240687743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240687841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120343935 + 120343936.

It is an arithmetic number, because the mean of its divisors is an integer number (120343936).

Almost surely, 2^240687871 is an apocalyptic number.

240687871 is a deficient number, since it is larger than the sum of its proper divisors (1).

240687871 is an equidigital number, since it uses as much as digits as its factorization.

240687871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 240687871 is about 15514.1184409556. The cubic root of 240687871 is about 622.0396501848.

The spelling of 240687871 in words is "two hundred forty million, six hundred eighty-seven thousand, eight hundred seventy-one".