840741617 has 2 divisors, whose sum is σ = 840741618. Its totient is φ = 840741616.

The previous prime is 840741599. The next prime is 840741623. The reversal of 840741617 is 716147048.

840741617 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., 542004961 + 298736656 = 23281^2 + 17284^2 .

It is a cyclic number.

It is not a de Polignac number, because 840741617 - 2⁶ = 840741553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (840741677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420370808 + 420370809.

It is an arithmetic number, because the mean of its divisors is an integer number (420370809).

Almost surely, 2^840741617 is an apocalyptic number.

It is an amenable number.

840741617 is a deficient number, since it is larger than the sum of its proper divisors (1).

840741617 is an equidigital number, since it uses as much as digits as its factorization.

840741617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 840741617 is about 28995.5447784655. The cubic root of 840741617 is about 943.8163907390.

The spelling of 840741617 in words is "eight hundred forty million, seven hundred forty-one thousand, six hundred seventeen".