8668563634 has 16 divisors (see below), whose sum is σ = 13091981760. Its totient is φ = 4304670480.

The previous prime is 8668563593. The next prime is 8668563637. The reversal of 8668563634 is 4363658668.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (8668563637) 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, 149212 + ... + 199000.

It is an arithmetic number, because the mean of its divisors is an integer number (818248860).

Almost surely, 2^8668563634 is an apocalyptic number.

8668563634 is a deficient number, since it is larger than the sum of its proper divisors (4423418126).

8668563634 is a wasteful number, since it uses less digits than its factorization.

8668563634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50385.

The product of its digits is 14929920, while the sum is 55.

The square root of 8668563634 is about 93105.1214166009. The cubic root of 8668563634 is about 2054.2299045765.

The spelling of 8668563634 in words is "eight billion, six hundred sixty-eight million, five hundred sixty-three thousand, six hundred thirty-four".