856968263 has 2 divisors, whose sum is σ = 856968264. Its totient is φ = 856968262.

The previous prime is 856968223. The next prime is 856968319. The reversal of 856968263 is 362869658.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 856968263 - 2¹⁶ = 856902727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (856968223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428484131 + 428484132.

It is an arithmetic number, because the mean of its divisors is an integer number (428484132).

Almost surely, 2^856968263 is an apocalyptic number.

856968263 is a deficient number, since it is larger than the sum of its proper divisors (1).

856968263 is an equidigital number, since it uses as much as digits as its factorization.

856968263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3732480, while the sum is 53.

The square root of 856968263 is about 29274.0202739562. The cubic root of 856968263 is about 949.8497501993.

The spelling of 856968263 in words is "eight hundred fifty-six million, nine hundred sixty-eight thousand, two hundred sixty-three".