13116569 has 2 divisors, whose sum is σ = 13116570. Its totient is φ = 13116568.

The previous prime is 13116563. The next prime is 13116589. The reversal of 13116569 is 96561131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12866569 + 250000 = 3587^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 13116569 - 2¹⁶ = 13051033 is a prime.

It is a super-4 number, since 4×13116569⁴ (a number of 30 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is equal to p₈₅₆₂₉₂ and since 13116569 and 856292 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13116563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6558284 + 6558285.

It is an arithmetic number, because the mean of its divisors is an integer number (6558285).

Almost surely, 2^13116569 is an apocalyptic number.

It is an amenable number.

13116569 is a deficient number, since it is larger than the sum of its proper divisors (1).

13116569 is an equidigital number, since it uses as much as digits as its factorization.

13116569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 32.

The square root of 13116569 is about 3621.6804110799. The cubic root of 13116569 is about 235.8341804157.

It can be divided in two parts, 131165 and 69, that multiplied together give a triangular number (9050385 = T₄₂₅₄).

The spelling of 13116569 in words is "thirteen million, one hundred sixteen thousand, five hundred sixty-nine".