16730563 has 4 divisors (see below), whose sum is σ = 17046288. Its totient is φ = 16414840.

The previous prime is 16730509. The next prime is 16730587. The reversal of 16730563 is 36503761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36503761 = 7 ⋅5214823.

It is a cyclic number.

It is not a de Polignac number, because 16730563 - 2¹³ = 16722371 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16730663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157783 + ... + 157888.

It is an arithmetic number, because the mean of its divisors is an integer number (4261572).

Almost surely, 2^16730563 is an apocalyptic number.

16730563 is a deficient number, since it is larger than the sum of its proper divisors (315725).

16730563 is an equidigital number, since it uses as much as digits as its factorization.

16730563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315724.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 16730563 is about 4090.3010891620. The cubic root of 16730563 is about 255.7624902845.

The spelling of 16730563 in words is "sixteen million, seven hundred thirty thousand, five hundred sixty-three".