865618463 has 2 divisors, whose sum is σ = 865618464. Its totient is φ = 865618462.

The previous prime is 865618459. The next prime is 865618513. The reversal of 865618463 is 364816568.

865618463 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 865618463 - 2² = 865618459 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (865618163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432809231 + 432809232.

It is an arithmetic number, because the mean of its divisors is an integer number (432809232).

Almost surely, 2^865618463 is an apocalyptic number.

865618463 is a deficient number, since it is larger than the sum of its proper divisors (1).

865618463 is an equidigital number, since it uses as much as digits as its factorization.

865618463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 47.

The square root of 865618463 is about 29421.3946474330. The cubic root of 865618463 is about 953.0349708432.

The spelling of 865618463 in words is "eight hundred sixty-five million, six hundred eighteen thousand, four hundred sixty-three".