115968569 has 2 divisors, whose sum is σ = 115968570. Its totient is φ = 115968568.

The previous prime is 115968563. The next prime is 115968583. The reversal of 115968569 is 965869511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115777600 + 190969 = 10760^2 + 437^2 .

It is a cyclic number.

It is not a de Polignac number, because 115968569 - 2⁸ = 115968313 is a prime.

It is a super-2 number, since 2×115968569² = 26897417991815522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (115968563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57984284 + 57984285.

It is an arithmetic number, because the mean of its divisors is an integer number (57984285).

Almost surely, 2^115968569 is an apocalyptic number.

It is an amenable number.

115968569 is a deficient number, since it is larger than the sum of its proper divisors (1).

115968569 is an equidigital number, since it uses as much as digits as its factorization.

115968569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 50.

The square root of 115968569 is about 10768.8703678705. The cubic root of 115968569 is about 487.6558435782.

The spelling of 115968569 in words is "one hundred fifteen million, nine hundred sixty-eight thousand, five hundred sixty-nine".