646324222243 has 8 divisors (see below), whose sum is σ = 770771743488. Its totient is φ = 529905573384.

The previous prime is 646324222223. The next prime is 646324222301. The reversal of 646324222243 is 342222423646.

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 646324222243 - 2⁵ = 646324222211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 646324222196 and 646324222205.

It is not an unprimeable number, because it can be changed into a prime (646324222223) 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, 2007217921 + ... + 2007218242.

It is an arithmetic number, because the mean of its divisors is an integer number (96346467936).

Almost surely, 2^646324222243 is an apocalyptic number.

646324222243 is a deficient number, since it is larger than the sum of its proper divisors (124447521245).

646324222243 is a wasteful number, since it uses less digits than its factorization.

646324222243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4014436193.

The product of its digits is 663552, while the sum is 40.

Adding to 646324222243 its reverse (342222423646), we get a palindrome (988546645889).

The spelling of 646324222243 in words is "six hundred forty-six billion, three hundred twenty-four million, two hundred twenty-two thousand, two hundred forty-three".