856522463 has 2 divisors, whose sum is σ = 856522464. Its totient is φ = 856522462.

The previous prime is 856522427. The next prime is 856522519. The reversal of 856522463 is 364225658.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 856522463 - 2²⁰ = 855473887 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 856522463.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (856522363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428261231 + 428261232.

It is an arithmetic number, because the mean of its divisors is an integer number (428261232).

Almost surely, 2^856522463 is an apocalyptic number.

856522463 is a deficient number, since it is larger than the sum of its proper divisors (1).

856522463 is an equidigital number, since it uses as much as digits as its factorization.

856522463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 41.

The square root of 856522463 is about 29266.4050235078. The cubic root of 856522463 is about 949.6850157963.

The spelling of 856522463 in words is "eight hundred fifty-six million, five hundred twenty-two thousand, four hundred sixty-three".