8263806563 has 8 divisors (see below), whose sum is σ = 8553039600. Its totient is φ = 7974858528.

The previous prime is 8263806557. The next prime is 8263806569. The reversal of 8263806563 is 3656083628.

It is an interprime number because it is at equal distance from previous prime (8263806557) and next prime (8263806569).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8263806563 - 2¹² = 8263802467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8263806569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11381 + ... + 129062.

It is an arithmetic number, because the mean of its divisors is an integer number (1069129950).

Almost surely, 2^8263806563 is an apocalyptic number.

8263806563 is a deficient number, since it is larger than the sum of its proper divisors (289233037).

8263806563 is a wasteful number, since it uses less digits than its factorization.

8263806563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142501.

The product of its (nonzero) digits is 1244160, while the sum is 47.

The square root of 8263806563 is about 90905.4814793915. The cubic root of 8263806563 is about 2021.7465666497.

The spelling of 8263806563 in words is "eight billion, two hundred sixty-three million, eight hundred six thousand, five hundred sixty-three".