115666693 has 2 divisors, whose sum is σ = 115666694. Its totient is φ = 115666692.

The previous prime is 115666669. The next prime is 115666697. The reversal of 115666693 is 396666511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83210884 + 32455809 = 9122^2 + 5697^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115666693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115666697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57833346 + 57833347.

It is an arithmetic number, because the mean of its divisors is an integer number (57833347).

Almost surely, 2^115666693 is an apocalyptic number.

It is an amenable number.

115666693 is a deficient number, since it is larger than the sum of its proper divisors (1).

115666693 is an equidigital number, since it uses as much as digits as its factorization.

115666693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 43.

The square root of 115666693 is about 10754.8450941889. The cubic root of 115666693 is about 487.2323394153.

The spelling of 115666693 in words is "one hundred fifteen million, six hundred sixty-six thousand, six hundred ninety-three".