115236661 has 4 divisors (see below), whose sum is σ = 115376832. Its totient is φ = 115096492.

The previous prime is 115236643. The next prime is 115236677. The reversal of 115236661 is 166632511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166632511 = 149 ⋅1118339.

It is a cyclic number.

It is not a de Polignac number, because 115236661 - 2⁵ = 115236629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115236061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68845 + ... + 70498.

It is an arithmetic number, because the mean of its divisors is an integer number (28844208).

Almost surely, 2^115236661 is an apocalyptic number.

It is an amenable number.

115236661 is a deficient number, since it is larger than the sum of its proper divisors (140171).

115236661 is an equidigital number, since it uses as much as digits as its factorization.

115236661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140170.

The product of its digits is 6480, while the sum is 31.

The square root of 115236661 is about 10734.8339996481. The cubic root of 115236661 is about 486.6277698213.

The spelling of 115236661 in words is "one hundred fifteen million, two hundred thirty-six thousand, six hundred sixty-one".