16560013 has 2 divisors, whose sum is σ = 16560014. Its totient is φ = 16560012.

The previous prime is 16560007. The next prime is 16560029. The reversal of 16560013 is 31006561.

16560013 = 2877² + 2878².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8282884 + 8277129 = 2878^2 + 2877^2 .

It is an emirp because it is prime and its reverse (31006561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16560013 - 2¹⁷ = 16428941 is a prime.

It is a super-3 number, since 3×16560013³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16560083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8280006 + 8280007.

It is an arithmetic number, because the mean of its divisors is an integer number (8280007).

Almost surely, 2^16560013 is an apocalyptic number.

16560013 is the 2878-th centered square number.

It is an amenable number.

16560013 is a deficient number, since it is larger than the sum of its proper divisors (1).

16560013 is an equidigital number, since it uses as much as digits as its factorization.

16560013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 16560013 is about 4069.3995871627. The cubic root of 16560013 is about 254.8904463400.

Adding to 16560013 its reverse (31006561), we get a palindrome (47566574).

The spelling of 16560013 in words is "sixteen million, five hundred sixty thousand, thirteen".