115666338 has 16 divisors (see below), whose sum is σ = 243508320. Its totient is φ = 36526176.

The previous prime is 115666337. The next prime is 115666339. The reversal of 115666338 is 833666511.

It is an interprime number because it is at equal distance from previous prime (115666337) and next prime (115666339).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 115666296 and 115666305.

It is not an unprimeable number, because it can be changed into a prime (115666337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507195 + ... + 507422.

It is an arithmetic number, because the mean of its divisors is an integer number (15219270).

Almost surely, 2^115666338 is an apocalyptic number.

115666338 is an abundant number, since it is smaller than the sum of its proper divisors (127841982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115666338 is a wasteful number, since it uses less digits than its factorization.

115666338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014641.

The product of its digits is 77760, while the sum is 39.

The square root of 115666338 is about 10754.8285899869. The cubic root of 115666338 is about 487.2318409495.

The spelling of 115666338 in words is "one hundred fifteen million, six hundred sixty-six thousand, three hundred thirty-eight".