115008661 has 2 divisors, whose sum is σ = 115008662. Its totient is φ = 115008660.

The previous prime is 115008659. The next prime is 115008683. The reversal of 115008661 is 166800511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97318225 + 17690436 = 9865^2 + 4206^2 .

It is an emirp because it is prime and its reverse (166800511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115008661 - 2¹ = 115008659 is a prime.

Together with 115008659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115008611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57504330 + 57504331.

It is an arithmetic number, because the mean of its divisors is an integer number (57504331).

Almost surely, 2^115008661 is an apocalyptic number.

It is an amenable number.

115008661 is a deficient number, since it is larger than the sum of its proper divisors (1).

115008661 is an equidigital number, since it uses as much as digits as its factorization.

115008661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 115008661 is about 10724.2091083679. The cubic root of 115008661 is about 486.3066209071.

The spelling of 115008661 in words is "one hundred fifteen million, eight thousand, six hundred sixty-one".