113688569 has 2 divisors, whose sum is σ = 113688570. Its totient is φ = 113688568.

The previous prime is 113688541. The next prime is 113688581. The reversal of 113688569 is 965886311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105781225 + 7907344 = 10285^2 + 2812^2 .

It is a cyclic number.

It is not a de Polignac number, because 113688569 - 2¹⁶ = 113623033 is a prime.

It is a super-2 number, since 2×113688569² = 25850181442535522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113688539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56844284 + 56844285.

It is an arithmetic number, because the mean of its divisors is an integer number (56844285).

Almost surely, 2^113688569 is an apocalyptic number.

It is an amenable number.

113688569 is a deficient number, since it is larger than the sum of its proper divisors (1).

113688569 is an equidigital number, since it uses as much as digits as its factorization.

113688569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 47.

The square root of 113688569 is about 10662.4841852169. The cubic root of 113688569 is about 484.4388152564.

The spelling of 113688569 in words is "one hundred thirteen million, six hundred eighty-eight thousand, five hundred sixty-nine".