115158665 has 8 divisors (see below), whose sum is σ = 140798088. Its totient is φ = 90388480.

The previous prime is 115158569. The next prime is 115158679. The reversal of 115158665 is 566851511.

It can be written as a sum of positive squares in 4 ways, for example, as 51222649 + 63936016 = 7157^2 + 7996^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 115158665 - 2⁸ = 115158409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217016 + ... + 217545.

It is an arithmetic number, because the mean of its divisors is an integer number (17599761).

Almost surely, 2^115158665 is an apocalyptic number.

It is an amenable number.

115158665 is a deficient number, since it is larger than the sum of its proper divisors (25639423).

115158665 is an equidigital number, since it uses as much as digits as its factorization.

115158665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434619.

The product of its digits is 36000, while the sum is 38.

The square root of 115158665 is about 10731.2005386164. The cubic root of 115158665 is about 486.5179564295.

The spelling of 115158665 in words is "one hundred fifteen million, one hundred fifty-eight thousand, six hundred sixty-five".