8648664406 has 4 divisors (see below), whose sum is σ = 12972996612. Its totient is φ = 4324332202.

The previous prime is 8648664383. The next prime is 8648664407. The reversal of 8648664406 is 6044668468.

It is a happy number.

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

It is a super-2 number, since 2×8648664406² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8648664407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2162166100 + ... + 2162166103.

It is an arithmetic number, because the mean of its divisors is an integer number (3243249153).

Almost surely, 2^8648664406 is an apocalyptic number.

8648664406 is a deficient number, since it is larger than the sum of its proper divisors (4324332206).

8648664406 is a wasteful number, since it uses less digits than its factorization.

8648664406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4324332205.

The product of its (nonzero) digits is 5308416, while the sum is 52.

The square root of 8648664406 is about 92998.1957136804. The cubic root of 8648664406 is about 2052.6568293462.

The spelling of 8648664406 in words is "eight billion, six hundred forty-eight million, six hundred sixty-four thousand, four hundred six".