16968559 has 2 divisors, whose sum is σ = 16968560. Its totient is φ = 16968558.

The previous prime is 16968557. The next prime is 16968583. The reversal of 16968559 is 95586961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16968559 - 2¹ = 16968557 is a prime.

Together with 16968557, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16968557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8484279 + 8484280.

It is an arithmetic number, because the mean of its divisors is an integer number (8484280).

Almost surely, 2^16968559 is an apocalyptic number.

16968559 is a deficient number, since it is larger than the sum of its proper divisors (1).

16968559 is an equidigital number, since it uses as much as digits as its factorization.

16968559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 49.

The square root of 16968559 is about 4119.2910797855. The cubic root of 16968559 is about 256.9695442519.

It can be divided in two parts, 169685 and 59, that added together give a square (169744 = 412²).

The spelling of 16968559 in words is "sixteen million, nine hundred sixty-eight thousand, five hundred fifty-nine".