16868593 has 6 divisors (see below), whose sum is σ = 19622706. Its totient is φ = 14458752.

The previous prime is 16868563. The next prime is 16868603. The reversal of 16868593 is 39586861.

It can be written as a sum of positive squares in only one way, i.e., 11336689 + 5531904 = 3367^2 + 2352^2 .

It is a de Polignac number, because none of the positive numbers 2^k-16868593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16868543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 172080 + ... + 172177.

It is an arithmetic number, because the mean of its divisors is an integer number (3270451).

Almost surely, 2^16868593 is an apocalyptic number.

It is an amenable number.

16868593 is a deficient number, since it is larger than the sum of its proper divisors (2754113).

16868593 is an equidigital number, since it uses as much as digits as its factorization.

16868593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344271 (or 344264 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 16868593 is about 4107.1392720481. The cubic root of 16868593 is about 256.4639262156.

The spelling of 16868593 in words is "sixteen million, eight hundred sixty-eight thousand, five hundred ninety-three".