6638223359 has 12 divisors (see below), whose sum is σ = 7078570224. Its totient is φ = 6223912704.

The previous prime is 6638223353. The next prime is 6638223377. The reversal of 6638223359 is 9533228366.

It is not a de Polignac number, because 6638223359 - 2⁴ = 6638223343 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6638223353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32339 + ... + 119675.

It is an arithmetic number, because the mean of its divisors is an integer number (589880852).

Almost surely, 2^6638223359 is an apocalyptic number.

6638223359 is a deficient number, since it is larger than the sum of its proper divisors (440346865).

6638223359 is a wasteful number, since it uses less digits than its factorization.

6638223359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87634 (or 87617 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 47.

The square root of 6638223359 is about 81475.2929359570. The cubic root of 6638223359 is about 1879.3916243911.

The spelling of 6638223359 in words is "six billion, six hundred thirty-eight million, two hundred twenty-three thousand, three hundred fifty-nine".