115280665 has 4 divisors (see below), whose sum is σ = 138336804. Its totient is φ = 92224528.

The previous prime is 115280653. The next prime is 115280677. The reversal of 115280665 is 566082511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 566082511 = 311 ⋅1820201.

It is an interprime number because it is at equal distance from previous prime (115280653) and next prime (115280677).

It can be written as a sum of positive squares in 2 ways, for example, as 77862976 + 37417689 = 8824^2 + 6117^2 .

It is a cyclic number.

It is not a de Polignac number, because 115280665 - 2¹³ = 115272473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115280665.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11528062 + ... + 11528071.

It is an arithmetic number, because the mean of its divisors is an integer number (34584201).

Almost surely, 2^115280665 is an apocalyptic number.

It is an amenable number.

115280665 is a deficient number, since it is larger than the sum of its proper divisors (23056139).

115280665 is an equidigital number, since it uses as much as digits as its factorization.

115280665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23056138.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 115280665 is about 10736.8833932385. The cubic root of 115280665 is about 486.6897027836.

The spelling of 115280665 in words is "one hundred fifteen million, two hundred eighty thousand, six hundred sixty-five".