3688448321 has 8 divisors (see below), whose sum is σ = 3899992320. Its totient is φ = 3478645872.

The previous prime is 3688448279. The next prime is 3688448327. The reversal of 3688448321 is 1238448863.

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 3688448321 - 2¹⁰ = 3688447297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3688448327) 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, 431030 + ... + 439503.

It is an arithmetic number, because the mean of its divisors is an integer number (487499040).

Almost surely, 2^3688448321 is an apocalyptic number.

It is an amenable number.

3688448321 is a deficient number, since it is larger than the sum of its proper divisors (211543999).

3688448321 is a wasteful number, since it uses less digits than its factorization.

3688448321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870775.

The product of its digits is 884736, while the sum is 47.

The square root of 3688448321 is about 60732.5968570421. The cubic root of 3688448321 is about 1545.0690781597.

The spelling of 3688448321 in words is "three billion, six hundred eighty-eight million, four hundred forty-eight thousand, three hundred twenty-one".