240638017 has 2 divisors, whose sum is σ = 240638018. Its totient is φ = 240638016.

The previous prime is 240637951. The next prime is 240638033. The reversal of 240638017 is 710836042.

240638017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192765456 + 47872561 = 13884^2 + 6919^2 .

It is a cyclic number.

It is not a de Polignac number, because 240638017 - 2⁷ = 240637889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240638017.

It is not a weakly prime, because it can be changed into another prime (240638117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120319008 + 120319009.

It is an arithmetic number, because the mean of its divisors is an integer number (120319009).

Almost surely, 2^240638017 is an apocalyptic number.

It is an amenable number.

240638017 is a deficient number, since it is larger than the sum of its proper divisors (1).

240638017 is an equidigital number, since it uses as much as digits as its factorization.

240638017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 240638017 is about 15512.5116277152. The cubic root of 240638017 is about 621.9966992515.

The spelling of 240638017 in words is "two hundred forty million, six hundred thirty-eight thousand, seventeen".