668832822563 has 4 divisors (see below), whose sum is σ = 669543591648. Its totient is φ = 668122053480.

The previous prime is 668832822521. The next prime is 668832822577. The reversal of 668832822563 is 365228238866.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 668832822563 - 2⁶ = 668832822499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (668832822863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355383131 + ... + 355385012.

It is an arithmetic number, because the mean of its divisors is an integer number (167385897912).

Almost surely, 2^668832822563 is an apocalyptic number.

668832822563 is a deficient number, since it is larger than the sum of its proper divisors (710769085).

668832822563 is an equidigital number, since it uses as much as digits as its factorization.

668832822563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710769084.

The product of its digits is 39813120, while the sum is 59.

The spelling of 668832822563 in words is "six hundred sixty-eight billion, eight hundred thirty-two million, eight hundred twenty-two thousand, five hundred sixty-three".